1

American Alligator

Image: Joshua J. Cotten

Did you know that American alligators are one of only two alligator species in the whole world ? China is the only other place with an alligator species, the Chinese alligator. Often confused with their relatives, the crocodiles and the caimans, alligators can be differentiated by the shape of their teeth, their round snouts, their darker color, and their preference for freshwater habitats. An inhabitant of tropical and subtropical wetlands, the American alligator can be found throughout the Southeastern U.S.

2

Nene

Image: Lyle Wilkinson

Also known as the Hawaiian goose, this bird can only be found in its wild state across the islands of Maui, Kauaʻi, Molokai, and Hawaiʻi . Believed to be distantly related to the Canada goose, the nēnē is considered the rarest goose species in the world and is a protected species. Thanks to successful conservation efforts, it has been reclassified from endangered to near threatened. It has also been designated as the official state bird of Hawaiʻi.

3

Common Raccoon

Image: Chris Ensminger

If you are asked to describe a raccoon, the common raccoon, native to North America, will most likely come to mind. The other two species of raccoon—also native to the Americas—present marked differences in color and size. Their name is derived from the Algonquian aroughcoune , meaning ‘he who scratches with his hands.’ The unusual shape of their thumbs, combined with their cleverness, allows them to open closed containers to access food and trash, which has earned them the nickname of "trash pandas." Due to human intervention, they have become a highly invasive species in European and Asian ecosystems.

4

Monarch Butterfly

Image: Alex Guillaume

One of the most recognizable butterfly species, the Monarch can be identified by its orange and black wings with white spots . Monarch subspecies can be found across the Americas, but the North American monarch is especially known for its remarkable migratory behavior. As winter approaches, monarch butterflies in the northern United States travel thousands of miles to overwintering sites in California and central Mexico. In spring, they will return home in time for summer.

5

North American Beaver

Image: Tim Umphreys

Though North American beavers are related to those found in Asia and Europe, their genetics are so different that they are unable to mix. North American beavers are generally larger and darker than their Eurasian counterparts , and they have a broader and longer tail. They are a widespread species across the Continental U.S., Canada, and northern Mexico and have been chosen as the official state mammal of Oregon and New York.

6

Bald Eagle

Image: Mathew Schwartz

Widely recognized as a national U.S. symbol and featured in multiple official imagery , the bald eagle came close to extinction in the late 20th century. Found across most of North America, it favors habitats near large bodies of water. Fun fact: bald eagles were named after the color of their head feathers, as the word ‘bald’ was anciently used for ‘having a white head.’

7

Alligator Snapping Turtle

Image: U.S. Fish and Wildlife Service Southeast Region, Public domain, via Wikimedia Commons

Like the reptile it takes its name from, this pointy reptile is only found in freshwater habitats across the U.S. The spiky ridges on its shell give it an armored tank appearance, but these will flatten as the turtle ages. They have an extremely powerful bite , and they have been known for biting human fingers off, which makes them a dangerous animal that should be approached with caution.

8

Texas Blind Salamander

Image: Ryan Hagerty/USFWS, Public domain, via Wikimedia Commons

Unlike other entries on this list, this amphibian can only be found in a very specific place: San Marcos, Texas . Considered to be a critically endangered species, the Texas blind salamander lives in underground caves and streams and is highly sensitive to water pollution and droughts.

9

Coyote

Image: Dylan Ferreira

Also known as the American jackal or prairie wolf, the coyote fulfills a key role in North American ecosystems by helping regulate the population of smaller animals and consuming carrion that could otherwise spread disease. Somewhat friendly toward humans, coyotes play an important role in Native American folklore, and there are recorded cases of domesticated coyotes.

10

Giant Kangaroo Rat

Image: Harrison, George, Public domain, via Wikimedia Commons

Although kangaroos are native to Australia, giant kangaroo rats are found only in California . Preferring dry, sandy habitats that allow them to dig burrows, these rodents are known for using foot stomps as a way of communicating. Due to habitat loss caused by agriculture, the giant kangaroo rat has been classified as an endangered species.

11

American Mink

Image: Alexandre Daoust

American minks can be found across Alaska, Canada, and the northern and central United States, both in the wild and on farms. Although they are not specifically bred to be tame, they are officially considered suitable to be pets if trained from a young age. Their introduction to many parts of Europe, Asia, and South America has harmed native species, and they have been classified as invasive in many of these regions.

1

Migratory frenzy

Image: George Henry Burgess, Public domain, via Wikimedia Commons

The California gold rush triggered one of the largest mass migration waves in US history, with an estimated 300,000 people moving to the West Coast in just a few years . On January 24, 1848, a carpenter called James W. Marshall found gold at a sawmill in Coloma. The news reached the East Coast in August and, in December, President James Knox Polk officially confirmed it to Congress.

As a result, by early 1849, thousands of would-be prospectors —known as the ‘49ers’— started flooding the state every day. In January 1848, San Francisco had 800 residents; by the end of 1850 it had some 25,000 , many of them living in shacks and tents. Although most of the newly arrived were Americans, the gold rush attracted people from other parts of the world like Latin America, Europe, Australia, and Asia. Thanks to this boom, California started to grow fast, building new roads, towns, churches, schools, and hospitals.

2

No place for a lady?

Image: Popular Graphic Arts, Public domain, via Wikimedia Commons

People in the 19th century considered the California goldfields lifestyle a bit too harsh for women, so there is not much testimony of them being involved in gold-digging . Only 700 of the 40,000 people who arrived by ship to the San Francisco Bay in 1849 were women. Some came with their husbands and families, but others were just seeking adventure.

Many of the few women living in California around this time were widows. Men frequently died in mining accidents, disputes, and diseases and the women would be left alone and in need of a job. During the gold rush, women ran profitable businesses like sewing, laundry, food preparation, and boarding houses. Others would be in high demand to work in brothels and saloons, serving drinks to the hundreds of lonely gold diggers.

3

Millionaires overnight

Image: Hans

Well, not exactly overnight, but pretty quickly. Brothers John and Daniel Murphy were two adventurous early California pioneers who got into the history books for having mined about $1.5 million —around $56 million today— worth of gold in a year. Within a very short period of time, they became prosperous men and influential figures in the area.

The town of Murphys —about 140 miles East of San Francisco— is named after them and is considered one of the oldest and most important of all the Gold Rush camps in the Golden State . Nowadays, this charming little town is a must-stop for tourists on their way to the mountains looking to travel back in time.

4

Blue Jeans become popular

Image: SwellMap, Public domain, via Wikimedia Commons

In 1853 a Jewish peddler called Levi Strauss arrived in California looking for sale opportunities derived from the Gold Rush. Does the name ring a bell? A couple of years later, with the help of a tailor called Jacob Davis, he invented the garment of choice for Forty-Niners and cowboys: the blue jeans . By the end of 1873, thousands of San Franciscans were wearing these iconic durable pants, and the name "Levi's" was registered as a trademark.

Although Levi Strauss didn't exactly get rich by mining gold, he found a way to earn a fortune from it. Blue jeans —originally called "waist-high overalls"— came to represent the untamed American West. Over the years, not only workers would adopt them: kids, women, and even Hollywood stars owned at least a pair. And now, over a century and a half later, blue jeans are still an international symbol of youth, freedom, and independence .

5

The first international financial crisis

Image: Zlaťáky.cz

In just a few years, the 1849-1855 Gold Rush radically transformed California, the United States, and the world. The influx of gold served as an accelerant for U.S. economic development and enabled massive investment in public buildings, schools, and the construction of a railroad across the country. However, by the mid-1850s the world economy was so interconnected that any event could cause an international crisis.

In 1857, a crash in British banks, the speculation on railroad stock, and the sinking of SS Central America —a ship transporting a huge amount of gold—, among other incidents, triggered the first international financial crisis, known as the "Panic of 1857" . As a result, the northern domestic economy took a significant hit. However, by 1859, the Panic began to level off, and the economy began to stabilize.

6

Mark Twain struck literary gold

Image: unattributed, Public domain, via Wikimedia Commons

Did you know that one of the greatest American authors became a writer after failing as a gold miner? Samuel Clemens —a.k.a. Mark Twain—, was only one of the thousands of men who moved West during the Gold Rush in hopes of making a fortune . In 1861 he followed his brother Orion all the way to Virginia City, Nevada where he became a miner. Things didn’t go very well so he ended up working for the local newspaper, and started using the pen name by which he is remembered to this day.

Twain moved to San Francisco in 1864 and came in contact with other writers like Bret Harte and Artemus Ward. His experience in the American West inspired several of his works , such as The Celebrated Jumping Frog of Calaveras County (1865) —which brought him national attention— and Roughing It (1872). Although he didn’t become rich finding gold, Twain made a substantial amount of money through his writing.

7

Who really got rich?

Image: Unsplash

As romantic as it may sound, migrating to a new land to find gold and get rich does not necessarily mean instant success. In fact, only a few made their fortune mining gold . For most of the Forty-Niners, arriving in California during the rush was synonymous with disappointment. The lucky minority that found some gold went on expensive trips or wasted their money on poor-quality alcohol and food at the saloons of the American West, becoming broke pretty quickly.

The people who actually managed to amass some wealth during the California Gold Rush were the ones who took advantage of the opportunities surrounding the growth of cities and the financial bubble . For example, entrepreneurial merchants would open businesses to satisfy the demands of the newly arrived prospectors. America’s greatest industrialists, on the other hand, became millionaires by investing in real estate or the new railroads. Besides, in the years following the rush, mining was no longer done by adventurous individuals, but by big companies with new technology.

8

A city built out of ships

Image: G.F. Nesbitt & Co., printer, Public domain, via Wikimedia Commons

In the mid-19th century, a great number of ships arrived in California from all over the world packed with people in search of fortune. At the same time, the gold rush brought rapid growth and San Francisco soon became one of the world's great seaports, dominating shipping in the American West. These gold-seekers didn’t exactly have a return ticket, so lots of boats started to pile up on the Bay .

A few of these approximately 500 abandoned ships were sunk or buried and now can be found beneath the Embarcadero and Financial District . Others were repurposed to serve as storeships, saloons, and hotels, or their debris was used to build houses, jails, and banks. Even today, archeologists continue to discover fragments and entire ships underneath the streets of San Francisco.

9

Death Valley, a winter tragedy

Image: Marina Šurniene

Do you know where the "Death Valley" name comes from? This desert valley in the northern Mojave Desert, in Eastern California, is thought to be the hottest place on Earth. However, it was not named after its summer temps but for a winter disaster. It was a group of prospectors who got lost looking for a shortcut to the goldfields of California in the winter of 1849-1850, that gave Death Valley its grim name.

Even before the Gold Rush, California attracted settlers searching for a new life. In 1846, a group of pioneers known as the Donner Party became snowbound and nearly half of them eventually died of starvation and exposure. A few years later, although scared and forewarned by this experience, a new group ventured across the desert. While this time around the journey was not so deadly, they suffered a few mishaps that led them to nickname the area Death Valley.

10

Found gold? Have yourself a Hangtown Fry!

Image: Ivan Shemereko

According to the legend, this famous omelet cooked with bacon and topped with fried oysters was created in El Dorado Hotel in Hangtown —today’s Placerville— after a prospector claimed to have found gold. To celebrate, he demanded to be served expensive food, so the cook put together a dish with the fanciest ingredients he had at hand: eggs were delicate and therefore very valuable; bacon was shipped from the East Coast; and oysters were brought fresh from San Francisco, over 100 miles away.

Since then, the Hangtown Fry has continued to be served at many of the local restaurants . Although now you can find versions with onions, bell peppers, and spices, this iconic dish has remained practically the same as it was during the Gold Rush more than a century and a half ago. Have you tried it?

1

Rosa Parks

Amid the fight against racial segregation in 1955, activist Rosa Parks rebelled against authority in an act of courage that went on to become a defining moment in America’s Civil Rights history . She was sitting on a bus alongside three other Black passengers when the driver asked them to give up their seats so a white passenger could sit. Parks refused to do it and was arrested.

This single act of bravery triggered the Montgomery Bus Boycott, which not only helped bring Martin Luther King Jr. to national prominence but also helped put pressure on the U.S. Supreme Court, which later upheld a lower court ruling that segregation on Montgomery’s public bus was unconstitutional.

2

Amelia Earhart

Looking back at Amelia Earhart's story is fascinating, but understanding the context in which she achieved those feats is even more incredible. She broke aviation records at a time when women were still not socially accepted in male-dominated fields .

Earhart became the first woman ever to fly solo across the Atlantic Ocean in 1932, the first woman to fly solo nonstop across the U.S., and the first person to fly solo from Hawaii to California. Earhart tragically disappeared in 1937 during an attempt to become the first woman to fly around the world, though her legacy inspired countless people to pursue their dreams no matter their gender.

3

Harriet Tubman

Harriet Tubman's life story is one of the clearest examples of heroism in this country’s history. She not only rejected the life she had been forced to live as an enslaved person and escaped to Pennsylvania in 1849, but she also gave up the safety she had found in the North and returned to the South to continue fighting for her people’s freedom .

Tubman is mainly known for being one of the conductors of the Underground Railroad, a secret network that helped thousands of enslaved people escape to the free states and Canada. She also worked for the Union Army during the Civil War and became involved in the women's suffrage movement afterwards.

4

Helen Keller

How did a young girl who had lost both her sight and hearing due to a terrible illness become an accomplished writer, speaker, and activist? It all started with her teacher, Anne Sullivan, and her revolutionary approach by which she taught Helen to communicate using fingerspelling, relying on manual finger-spelling pressed directly into the girl’s palm.

This enabled Keller to learn Braille later and eventually speak, but that wasn’t enough for her, and she also went on to become the first deafblind person to earn a bachelor’s degree in 1903 (at Radcliffe College). Her story is not only about overcoming barriers, but about helping and inspiring others in similar situations to overcome them.

5

Susan B. Anthony

When it comes to the women’s suffrage movement, Susan B. Anthony is a name that stands out. She was a relentless civil rights activist who challenged authority regardless of the consequences. In 1872, she deliberately voted in the presidential election even though women were not legally allowed to, and was arrested and tried.

She fought for women’s rights until her final days and, unfortunately, didn’t live long enough to see the fruits of her work, which came in 1920 with the ratification of the 19th Amendment, fourteen years after her death at age 86.

6

Eleanor Roosevelt

The First Lady who stepped up and refused to just be in the background : that’s Eleanor Roosevelt, someone who transformed her socially expected passive role into a much more active platform for social causes.

Using her position as a First Lady (from 1933 to 1945), she advocated for civil rights, women’s rights, workers’ rights, and the rights of people living in poverty, challenging the status quo. Among the many causes she participated in, Eleanor also chaired the UN Commission on Human Rights and played a key role in drafting the 1948 Universal Declaration of Human Rights.

7

Clara Barton

Clara Barton, aka "The Angel of the Battlefield," was a central figure during the Civil War and was later responsible for saving thousands of lives through the creation of the American Red Cross .

She helped wounded soldiers, collected and distributed medical supplies to Union soldiers, and even went directly onto battlefields to care for troops. And after the war, she dedicated her life to helping people affected by disasters.

8

Maya Angelou

Maya Angelou’s powerful and moving I Know Why the Caged Bird Sings (1969) was one of the first autobiographies by a Black American woman to achieve widespread recognition, and her story became a symbol of resilience and dignity .

Angelou worked closely with Martin Luther King Jr. in the civil rights movement. She was also an actress and a singer, and in 2011, President Barack Obama awarded her the Presidential Medal of Freedom.

9

Katherine Johnson

Katherine Johnson’s story wasn’t widely known until the 2016 film Hidden Figures (where she was portrayed by Taraji P. Henson) , which introduced modern audiences to the fascinating contributions of this mathematician, whose calculations were crucial to some of the United States’ earliest crewed space missions and whose career helped break barriers for women and Black Americans.

Her work was partly responsible for the success of the Apollo missions (1969 to 1970) and the development of the Space Shuttle program through the 1970s and early 1980s, and while she wasn’t an activist, the fact that she became one of NASA’s most respected mathematicians challenged the norm and inspired social change.

10

Billie Jean King

The four biggest tennis tournaments are known as Grand Slams, and Billie Jean King racked up 39 — but that wasn’t even her best achievement. King’s biggest battle was against the inequalities women faced in sports , where she played a major role in turning things around.

She was responsible for the creation of the Women’s Tennis Association in 1973, co-founded the Virginia Slims Circuit, which provided professional opportunities for women in tennis, and played in the legendary "Battle of the Sexes," where she defeated Bobby Riggs in front of roughly 90 million viewers worldwide.