MORE EVENTS ON THIS DAY

2017: After some 37 years as leader of Zimbabwe—first as prime minister and later as president—Robert Mugabe resigned from office as the parliament began impeachment proceedings against him. [ Test your knowledge of African leaders.]

2002: A North Atlantic Treaty Organization (NATO) summit meeting in Prague extended an official invitation to become new alliance members to Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia, and Slovenia. [ Sort fact from fiction in our quiz about world organizations.]

2000: The United Farm Workers called off the boycott of California table grapes begun in 1984 by union organizer Cesar Chavez, saying the goals of the strike had been met.

1995: A peace agreement, known as the Dayton Accords, was reached by the presidents of Bosnia, Croatia, and Serbia, ending the Bosnian War. [Sort fact from fiction in our quiz about European history.]

1964: The Verrazzano- (originally Verrazano-) Narrows Bridge, spanning New York Harbor from Brooklyn to Staten Island, opened to traffic. [ How much do you know about bridges?]

1931: The horror classic Frankenstein, based on a stage adaptation of Mary Wollstonecraft Shelley's 1818 novel, was released in the United States, and it helped make the hulking monster , who was portrayed by Boris Karloff , one of the most recognizable characters in film history. [Take our quiz about monsters, ghouls, and ghosts.]