1. James Monroe
   Thomas Jefferson
2. John Adams
   George Washington

George Washington and the Continental Army crossed the Delaware River to attack Hessian troops in the Trenton, New Jersey area. The width of the Delaware River at the point where Washington and his troops crossed is less than 300 yards.

1. Amelia Earhart
   Sally Ride
2. Rhea Woltman
   Jean Hixson

On July 24, 1897, Amelia Earhart was born in Atchinson, Kansas. In December 1920, she took her first airplane ride with Frank Hawks, who was a pilot in World War I. The following month, she began flying lessons with Neta Snook, a female flight instructor.

1. Benjamin Disraeli
   Neville Chamberlain
2. Winston Churchill
   John Major

Winston Churchill's mother was born Jennie Jerome in Brooklyn, New York. On April 15, 1874, she married Lord Randolph Churchill, who would father Winston Churchill. After Lord Churchill's death, the future prime minister's mother married George Cornwallis-West.

1. Malcolm X
   Al Sharpton
2. Bayard Rustin
   Martin Luther King Jr.

In 1963, Martin Luther King Jr. helped organize the Montgomery Bus Boycott. His efforts for civil rights led to the Civil Rights Act and the Voting Rights Act. Martin Luther King Jr. Day became a federal holiday in 1986.

1. Dwight Eisenhower
   Richard Nixon
2. John F. Kennedy
   Harry Truman

John F. Kennedy served as the 35th president of the United States. He was in office from 1961 to 1963. Kennedy was the youngest man elected as president of the United States and also the youngest president to die in office.

1. John Lennon
   Paul McCartney
2. George Harrison
   Ring Starr

In 1971, the Beatles' "Let it Be" won the Academy Award for Best Original Score. As a member of Wings, McCartney was nominated for Best Original Song for "Live and Let Die." His most recent nomination was for "Vanilla Sky" in the Best Original song category.

1. Vladimir Lenin
   Josef Stalin
2. Vladimir Putin
   Mikhail Gorbachev

In 1985, Mikhail Gorbachev was elected as leader of the Soviet Union and immediately starting reforming communism. Gorbachev introduced "glasnost" and "perestroika," which mean openness and change, respectively.

1. Luis Carrero Blanco
   Pedro Sánchez
2. Francisco Franco
   Francisco Gómez-Jordana

In 1969, Francisco Franco appointed Prince Juan Carlos as his successor. The prince would become the leader of Spain after Franco's death in 1975. Once he became king, Juan Carlos began Spain's transition to democracy.

1. Russell Wallace
   Galileo
2. Aristotle
   Charles Darwin

In the late 1830s, Charles Darwin developed the theory of evolution by natural selection. However, he would not publish his finding until 1859, the year "On the Origin of Species" was published.

1. Johnny Cash
   Elvis Presley
2. Roy Orbison
   Chubby Checker

On March 25, 1957, Elvis bought Graceland for $102,500. The building was 10,255 square feet but has been expanded to 17,522 square feet. Elvis also purchased the 13.8 acres around Graceland.

1. Jackie Robinson
   Willie Mays
2. Yogi Berra
   Joe DiMaggio

On Apr. 15, 1947, Jackie Robinson joined the Montreal Royals, which was a farm team for the Brooklyn Dodgers. Previously, Robinson played for the Kansas City Monarchs in the Negro Leagues.

1. Marie Curie
   Rosalind Franklin
2. Jane Goodall
   Hedy Lamarr

In 1903, Marie Curie, her husband Pierre Curie and Henri Becquerel were awarded the Nobel Prize for Physics. Eight years later, Marie Curie would earn the Nobel Prize in Chemistry for her work in radioactivity.

1. Pope John Paul II
   Martin Luther
2. Confucius
   Mahatma Gandhi

Mahondas Gandhi was born in India and educated in England. In 1983, he went to South Africa to practice law for a year. While there, he faced discrimination due to laws restricting the rights of Indian laborers, which led to his fight against injustice.

1. Mother Teresa
   Helen Keller
2. Clara Barton
   Florence Nightingale

Mother Teresa was born Agnes Gonxha Bojaxhiu in present-day Macedonia. She founded the Order of the Missionaries of Charity, which is a group of women dedicated to helping the poor.

1. Louis XVIII
   Napoleon Bonaparte
2. Emmanuel Macron
   Charles de Gaulle

The confusion over Napoleon's height comes from the fact that a physician's note says that Napoleon was 5'2" "from the top of the head to the heels," which is true in French measurements. In English measurements, that is 5'6", which was average height for a man at the time.

1. Hermann Göring
   Joseph Goebbels
2. Adolf Hitler
   Josef Mengele

In January 1933, Paul von Hindenburg appointed Adolf Hitler chancellor of Germany. Initially, Hindenburg did not want to appoint Hitler because he did not want to give legitimacy to the Nazi ideology.

1. Simon Bolivar
   Miguel Hidalgo y Costilla
2. José de San Martín
   Toussaint Louverture

After his parents' deaths, Simon Bolivar moved to Spain, where he continued his education. Bolivar would not return to his home country of Venezuela until 1807. Once Joseph Bonaparte became King of Spain and its colonies, Bolivar joined the resistance.

1. Theresa May
   Margaret Thatcher
2. Kim Campbell
   Angela Merkel

Margaret Thatcher is Britain's longest continuously serving prime minister since 1827. She is also the only British prime minister to win three consecutive terms in the 20th century.

1. Bill Gates
   Steve Jobs
2. Paul Allen
   Steve Wozniak

In 1999, Bill Gates' net worth was over $101 billion due to Microsoft's stock price. Fifteen years later, Gates would step down as Microsoft chairman to work with his wife at the Bill and Melinda Gates Foundation.

1. Jayne Mansfield
   Sophia Loren
2. Elizabeth Taylor
   Marilyn Monroe

On June 1, 1926, Marilyn Monroe was born Norma Jeane Mortenson. In 1946, Monroe signed her first film contract, changed her name and dyed her hair blonde. At 36 years old, she would die from a drug overdose.

1. Christopher Columbus
   Hernan Cortes
2. Henry Hudson
   Juan Ponce de Leon

As a teenager, Columbus went on several trading trips in the Mediterranean and Aegean seas. However, French privateers attacked Columbus' first voyage in the Atlantic. Columbus survived by swimming to shore.

1. Desmond Tutu
   César Chávez
2. Nelson Mandela
   José Ramos-Horta

Nelson Mandela served as president of South Africa from 1994 to 1999. In 1993, Mandela and F.W. de Klerk, the South African president, were awarded the Nobel Prize for Peace for their role in ending apartheid.

1. Pope Francis
   Pope Benedict XVI
2. Pope Pius XII
   Pope John Paul II

Pope John Paul II was born in Wadowice, Poland on May 18, 1920. His birth name was Karol Józef Wojtyla. When he was 26 years old, the future Pope was ordained. In 1958, he became the bishop of Ombi.

1. Queen Rania Al-Abdullah
   Benazir Bhutto
2. Malala Yousafzai
   Massouda Jalal

Benazir Bhutto studied at Harvard University and the University of Oxford. From 1979 to 1984, Bhutto was frequently under house arrest. From 1984 to 1986, she was exiled from her home country.

1. John Lasseter
   Walt Disney
2. Seth MacFarlane
   Time Burton

Before "Steamboat Willie," there were two animated shorts featuring Mickey Mouse. They were called "Olane Crazy" and "The Gallopin' Gaucho." Neither film was able to find distribution.

1. Judy Blume
   E.L. James
2. Stephenie Meyer
   J.K. Rowling

J.K. Rowling wrote "Harry Potter and the Philosophers' Stone" in 1994. Three years later, the book was published in the United Kingdom. In 1998, the book was released in the United States as "Harry Potter and the Sorcerer's Stone."

1. Ramón Grau
   Fulgencio Batista
2. Che Guevera
   Fidel Castro

In 1959, Fidel Castro overthrew Fulgencio Batista's military dictatorship of Cuba. For the next 49 years, Castro would rule Cuba. When he stepped down, Castro's successor was his younger brother Raul.

1. Leonid Brezhnev
   Mikhail Gorbachev
2. Konstantin Chernenko
   Vladimir Lenin

Vladimir Lenin was born Vladimir Ilyich Ulyanov. Before settling on "Lenin" as his pseudonym, Lenin tried "K. Tulin" and "Petrov" among others. He settled on the name he would be known for by 1902.

1. Jonas Salk
   Joseph Lister
2. Sigmund Freud
   Benjamin Spock

In 1954, Jonas Salk's vaccine was tested on 1 million children. These children were between 6 and 9 years old and were known as the Polio Pioneers. On April 12, 1955, the vaccine was determined to be safe and effective.

1. Charlemagne
   Genghis Khan
2. Confucius
   Xi Jinping

Genghis Khan was born around 1152 and was named Temujin. While historians have a general idea of what his life was like, there is no conclusive record of what Genghis Khan looked like because there are no portraits or sculptures of him from that period.

1. Thomas Edison
   Philo Farnsworth
2. Eli Whitney
   Nikola Tesla

Thomas Edison's first invention was the Universal Stock Pinter, which improved upon the stock ticker. He received $40,000 from The Gold and Stock Telegraph Company for it. The invention provided him with enough money to quit his job and devote his time to inventing.

1. Henry Kissinger
   William P. Rogers
2. Alexander Haig
   Edmund Muskie

Henry Kissinger served as the United States' 56th Secretary of State. He held the position from 1973 to 1977. Before serving as Secretary of State, Kissinger worked at Harvard in the Department of Government and at the Center for International Affairs.

1. Vivien Leigh
   Ava Gardner
2. Grace Kelly
   Sophia Loren

Before she met Prince Rainier III, Grace Kelly was one of the highest paid actresses in the world. In 1955, she met Prince Rainier as she was filming Alfred Hitchcock's "To Catch a Thief."

1. Mark Antony
   Hadrian
2. Publius Vatinius
   Julius Caesar

Cleopatra had a son with Julius Caesar. The child, Ptolemy Caesar, was known as Caesarion, which means little Caesar. He co-ruled Egypt with his mother. After Cleopatra's her death, he was killed by emperor Augustus.

1. Galileo Galilei
   Nicolaus Copernicus
2. Johannes Kepler
   Edwin Hubble

When Galileo Galilei wrote about his belief in a heliocentric universe, the Catholic Church brought him to Rome to face charges from the Inquisition because, at that time, the Catholic Church believed Earth was at the center of the universe.