1

The American Revolution against the British Empire

When fighting began in 1775, Britain was the world’s most powerful empire. The colonies had no professional army, little money, and limited supplies . George Washington’s Continental Army often struggled with food shortages, harsh winters, and major defeats during the early years of the war.

The turning point came after the American victory at Saratoga, New York, in 1777, which convinced France to support the colonies. British General Charles Cornwallis finally surrendered at Yorktown, Virginia, on October 19, 1781. The Treaty of Paris officially recognized U.S. independence in 1783.

2

Abraham Lincoln won the Civil War after early Union defeats

At the start of the Civil War, the Union suffered humiliating losses, including the First Battle of Bull Run in 1861. Many Americans doubted President Abraham Lincoln’s leadership, while Confederate General Robert E. Lee repeatedly defeated Union forces in Virginia.

Things changed in July 1863, when Union victories at Gettysburg, Pennsylvania, and Vicksburg, Mississippi, shifted momentum . Lincoln’s support for General Ulysses S. Grant helped the North gain control. Lee surrendered at Appomattox Court House, Virginia, on April 9, 1865.

3

The Apollo 13 mission’s safe return

Apollo 13 was launched on April 11, 1970, and was supposed to become NASA’s third Moon landing. But two days later, an oxygen tank exploded in space. Astronauts Jim Lovell, Fred Haise, and Jack Swigert suddenly faced freezing temperatures, limited power, and dwindling oxygen .

NASA engineers in Houston worked nonstop to save the crew. The astronauts used the lunar module as a lifeboat and improvised repairs with onboard materials. Against enormous odds, Apollo 13 safely splashed down in the Pacific Ocean on April 17, 1970.

4

Economic recovery from the Great Depression

The Great Depression devastated the U.S. after the stock market crash of 1929. By 1933, unemployment had reached nearly 25%, banks were collapsing, and millions of Americans lost homes, jobs, and savings during the worst economic crisis in modern U.S. history.

President Franklin D. Roosevelt introduced New Deal programs aimed at relief and recovery after taking office in March 1933. Public works projects, banking reforms, and job programs slowly helped stabilize the economy . The country eventually emerged stronger during the years leading up to World War II.

5

The 1980 "Miracle on Ice" victory v.s the USSR

During the 1980 Winter Olympics in Lake Placid, New York, the Soviet hockey team was considered nearly unbeatable . The USSR had dominated international hockey for years, while the young American team consisted mostly of amateur and college players.

On February 22, 1980, the U.S. shocked the world with a dramatic 4-3 victory over the Soviets . Mike Eruzione scored the winning goal, and broadcaster Al Michaels famously asked, "Do you believe in miracles?" The Americans later defeated Finland to win Olympic gold.

6

The Chicago Cubs ending their 108-year World Series drought in 2016

The Chicago Cubs had not won the World Series since 1908, suffering one of the longest championship droughts in sports history. By 2016, generations of fans believed the team was cursed after decades of heartbreaking losses and missed opportunities.

The Cubs fell behind three games to one against Cleveland in the 2016 World Series, but fought back to force Game 7. On November 2, 2016, Chicago won 8-7 in 10 innings after a rain delay, finally ending its 108-year drought

7

The Space Race

The Soviet Union dominated the early Space Race by launching Sputnik in 1957 and sending Yuri Gagarin into orbit in 1961. At the time, many experts believed the U.S. was permanently behind in space technology.

President John F. Kennedy challenged NASA to land a man on the Moon before the decade ended. After years of Mercury, Gemini, and Apollo missions, Neil Armstrong and Buzz Aldrin landed on the Moon on July 20, 1969, during Apollo 11.

8

New Orleans’ recovery after Hurricane Katrina

Hurricane Katrina struck the Gulf Coast in August 2005 and caused catastrophic flooding in New Orleans after the levees failed. About 80% of the city was flooded, and hundreds of thousands of residents were displaced in one of America’s worst natural disasters.

Recovery took years and required rebuilding homes, schools, roads, and flood protection systems . Despite enormous challenges, New Orleans gradually restored much of its tourism, culture, music scene, and population while continuing to strengthen its storm defenses.

9

The U.S. women’s soccer team in 1999 and 2019

The 1999 U.S. women’s soccer team helped transform women’s sports in America. Facing strong international competition, the Americans defeated China in the Women’s World Cup final before more than 90,000 fans at the Rose Bowl in Pasadena, California.

Twenty years later, the U.S. returned to the top again at the 2019 Women’s World Cup in France . Megan Rapinoe and Rose Lavelle scored in a 2-0 victory over the Netherlands in Lyon, giving the U.S. its fourth world title.

10

The Boston Red Sox reversing a 0-3 deficit against the Yankees in 2004

In a 2004 American League Championship Series, the Boston Red Sox lost the first three games against their rivals, the New York Yankees. No baseball team had ever recovered from a 0-3 deficit in a best-of-seven postseason series.

Boston stayed alive after Dave Roberts stole second base in the ninth inning of Game 4. The Red Sox then won four straight games to complete the comeback . They went on to sweep the St. Louis Cardinals and win their first World Series since 1918.

1

What are bills made of?

Unlike other currencies, dollar bills are not made of paper or plastic. U.S. dollar bills are made from a special fabric blend composed of 75% cotton and 25% linen. This mix makes the bills extremely durable and resistant, and they can be folded about 4000 times before tearing.

2

What bills are valid?

Any U.S. dollar bill that was legally printed is valid, no matter how old, as American currency does not have an expiration date. While some bills might not be accepted by businesses of foreign exchange services due to their condition or if they are a discontinued version of the bill, the bills themselves are still valid, and American banks will accept them, though they might take them out of circulation.

3

American leaders

Five bills have a depiction of an American president. The exceptions are the $10 bill, with Alexander Hamilton on the front, and the $100 bill, with Benjamin Franklin. The $1 bill, depicting George Washington, is extremely symbolic: several elements are repeated 13 times as a nod to the thirteen colonies, and it showcases the Bald Eagle and the Eye of Providence as a sign of God watching over America.

4

A change in size

Did you know that dollar bills used to be so big that they were nicknamed "horse blankets"? Original dollar bills were 7.4 × 3.1 inches. In 1929, the Treasury Department reduced the size of bills to 6.14 × 2.61 inches to reduce production costs and materials. Old bills, though still valid, are worth much more as collector items.

5

Uniformity

Besides their value and design, all dollar bills have the same size (6.14 × 2.61 inches), color, and weight (1 gram) , which sets American currency apart from other countries where bills of different values are differentiated by size, color, or both. Why doesn’t the U.S. implement differences among bills? The cost of adapting vending machines, bank drawers, and ATMs to new bill sizes would cost billions of dollars.

6

Hard to copy

Originally, dollars were not green, but black. As time passed, green ink was favored, as it was cheap and did not fade as much as black. The new color also prevented people from using black-and-white cameras to create counterfeit money. Currently, dollar bills are predominantly green, but newer versions also include extra colors, such as pink, orange, or purple.

7

A $100,000 bill?

Have you ever seen a $500 or 1,000 dollar bill? What about a $100,000? Up until 1945, the U.S. Treasury printed $500, $1,000, $5,000, $10,000, and $100,000 notes , in addition to the values currently in use. These higher-value notes were mainly intended for bank and government use, but were sought by criminals as they made it easier to hide large amounts of money. Even though they were officially discontinued in 1969, these notes are still valid, though rare, and they have a high worth as collector's items.

8

No numbers

Unlike bills, American coins have different sizes and colors related to their value. Originally, gold, silver, and copper were used for coins, but modern coins are made of copper, zinc, or nickel. Besides their size and design, the value of each coin is printed in letters, not in numbers , alongside depictions of American presidents.

9

Liberty for all (the coins)

By law, all American coins must include six specific details : the word ‘Liberty’, the name of our country, the national motto "In God We Trust", the oldest American motto "E Pluribus Unum", the value of the coin, and the year. Each coin also includes a mint mark that shows where it was made: "P" for Philadelphia, "D" for Denver, "S" for San Francisco, and "W" for West Point.

10

A global currency

The American dollar is one of the most powerful currencies in the world, acting as a backbone for international trade and finances. It is estimated that two-thirds of the physical dollars in circulation are outside American territory. Besides the U.S. and its territories, eight sovereign nations have the U.S. dollar as their official currency, with several more accepting it as legal tender.

1

There's an unexplained billion-year gap

Look closely at the canyon walls, and you'll notice something strange: a clean, sharp line where ancient rock simply stops, and a much younger layer begins directly above it.

This geological puzzle is called the "Great Unconformity," and it represents over a billion years of rock layers that are simply absent , as though that stretch of time never happened. In some spots, rock dated 1.8 billion years old sits directly beneath rock that is only 520 million years old. Where did the missing billion years go?

The leading theory involves the violent breakup of an ancient supercontinent, but scientists are still piecing it together.

2

During the Cold War, it hid a nuclear fallout shelter

During the Cuban Missile Crisis in 1962, the U.S. government converted part of the Grand Canyon Caverns into a fallout shelter. This dry cave system, more than 200 feet underground, was stocked with enough food and water to sustain 2,000 people. Naturally, it was never occupied, and the supplies were never used.

The caverns have since been transformed into a tourist attraction, with organized tours winding through the same underground chambers that were once intended as a refuge from nuclear war. You can even book a night's stay there.

3

The Federal Aviation Administration was founded after a crash over the canyon

In 1956, two commercial passenger planes collided in midair over the eastern Grand Canyon, killing all 128 people on board both crafts. Rescue teams struggled to reach the wreckage deep inside the canyon, and the extreme heat of the crash had caused the planes' aluminum to fuse with the bedrock. There were no survivors.

The disaster exposed a terrifying truth: the U.S. air traffic control system was dangerously outdated, relying on pilots' visual estimates and rough guesswork from controllers , with no way to separate fast-moving aircraft from slow ones, or instrument-flying planes from those navigating by sight. Congress responded by passing legislation that created both the Federal Aviation Administration (FAA) and the National Transportation Safety Board.

4

A hoax suggested that an Egyptian civilization had lived there

In 1909, the Arizona Gazette reported that an explorer named G. E. Kinkaid had discovered a vast underground citadel inside the canyon, filled with artifacts linked to ancient Egyptian civilization. He even claimed the expedition had been funded by the Smithsonian.

This story described hieroglyphics on the walls, mummies in the chambers, and relics pointing to a direct connection with the Egypt of the pharaohs. It was incredibly detailed, and it was, of course, a hoax. No evidence for any of Kinkaid's claims ever surfaced.

5

Fewer than 100 people have ever hiked its full length

Among the few people who have completed the through-hike of the Grand Canyon is Jen Hogan, the first woman to accomplish it, finishing her journey in 2021–2022.

It’s a full 800-mile length below the rim. The route involves extreme heat, flash floods, near-impassable areas, and stretches with no water or trail whatsoever. Around 60 or 70 people have reportedly accomplished it. This makes it one of the most exclusive feats on Earth.

6

The Grand Canyon's rocks predate dinosaurs entirely

Visitors scanning the canyon walls for fossils are often surprised to learn they won't find any dinosaur bones here. The rock layers of the Grand Canyon are simply older than dinosaurs. This fact alone can be shocking: staring at its walls means staring at marine fossils from as far back as 1.2 billion years ago. Some of its caves hold the remains of ancient mammals. The canyon is a window into a world that existed long before the dinosaurs, when the land that is now Arizona lay beneath a shallow sea.

7

The park is bigger than Rhode Island

Numbers alone rarely capture the Grand Canyon's scale, so here's a different approach. Rhode Island covers about 1,214 square miles, and the Grand Canyon National Park spans 1,904 square miles.

The canyon's depth exceeds four Empire State Buildings (which is 1,454 feet) stacked on top of one another. That’s 6,093 feet at its deepest point.

8

But it's not the deepest canyon on Earth

For all its grandeur, the Grand Canyon does not hold the depth record. Pictured above, the Yarlung Tsangpo Grand Canyon in Tibet, China, plunges to 17,567 feet, which is nearly three times deeper. Carved by the Yarlung Tsangpo River as it cuts through the eastern Himalayas, that canyon is so remote and extreme that it remained largely uncharted until the late 20th century.

9

It is home to a pink rattlesnake found nowhere else on Earth

The Grand Canyon Pink Rattlesnake has a pinkish-red coloring that matches the canyon's own distinctive rock walls so closely that it's nearly invisible. It is found nowhere else in the world. Officially classified as Crotalus oreganus abyssus , it has darker diamond-shaped markings along its back that deepen the camouflage further.

10

There's a village at the bottom: Supai Village

For over 1,000 years, the remote village of Supai has been home to the Havasupai Tribe, the People of the Blue-Green Waters. It is located an eight-mile hike from the rim, but sits roughly 3,000 feet deep inside the Grand Canyon.

The U.S. Department of Agriculture has called it the most remote community in the contiguous United States, and it has no automobiles and no road access. The only ways in are on foot, by mule, or by helicopter. It is also the only place in the United States where the postal service still delivers mail by mule train.