Jimmy Carter, the 39th president of the United States (1977–81), died at age 100. He had been awarded the Nobel Prize for Peace in 2002 for his work in diplomacy and advocacy, both during and after his presidency. [Read an interview with Jimmy Carter.]

Brazilian football (soccer) legend Pelé, one of the sport’s greatest players and among the first athletes to become global celebrities, died at age 82. [Test your knowledge of football.]

Vivienne Westwood—who, with Malcom McLaren, extended the influence of the 1970s punk movement into fashion and later became a leading independent designer—died at age 81. [How much do you know about fashion?]

Guinea was declared free of ebola by the World Health Organization, some two years after the deadly disease was reported in the country and sparked an outbreak in western Africa.

Leaders of the Khmer Rouge, the group that ruled Cambodia from 1975 to 1979, publicly apologized for the millions of people their government was responsible for killing during the Cambodian genocide.

With the enactment of a new constitution, the Irish Free State became known as Ireland. [Take our quiz about European history.]

Mary Tyler Moore, best known for her roles on two iconic TV sitcoms—The Dick Van Dyke Show (1961–66) and The Mary Tyler Moore Show (1970–77)—was born in Brooklyn, New York.

U.S. Army troops carried out the Wounded Knee Massacre, which was the last major armed conflict between the United States and the Plains tribes. Scholars estimate that between 250 and 300 Lakota men, women, and children were killed, and at least 25 U.S. soldiers died, many likely from friendly fire.

Abolitionist crusader William Lloyd Garrison published the last issue of The Liberator. [Take our fast facts quiz about abolitionism.]

The U.S. Congress approved the annexation of the independent Republic of Texas by the United States. [How did Texas achieve independence from Mexico?]

William Ewart Gladstone, who served as prime minister of Great Britain four times (1868–74, 1880–85, 1886, 1892–94), was born in Liverpool. [Test your knowledge of notable prime ministers.]

Andrew Johnson, 17th U.S. president (1865–69) and the first ever to be impeached, was born in Raleigh, North Carolina. [Which U.S. presidents have been impeached?]

Hyacinthe Rigaud, one of the most prolific and successful French portrait painters of the Baroque period, died in Paris. [Take our quiz about famous artists.]