1) The American Civil Rights Movement, led by figures like Martin Luther King Jr., fought for equal rights and helped bring about significant social and legislative changes.

2) The Battle of Waterloo in 1815 marked the final defeat of Napoleon Bonaparte and the end of his reign as Emperor of France.

3) Angelina Jolie is an American actress, filmmaker, and humanitarian. She has received critical acclaim for her performances in films such as "Girl, Interrupted," "Mr. & Mrs. Smith," and "Maleficent," and has been actively involved in humanitarian work around the world.

4) The United States operates under a two-party system, with the Democratic Party and the Republican Party being the two major political parties that compete in elections and shape the country's political landscape.