1. 1916: The Arab Revolt against the Ottoman Empire began.

2. 1947: U.S. Secretary of State George Marshall outlined the Marshall Plan for European recovery after World War II.

3. 1963: British Secretary of War John Profumo resigned over a scandal involving a call girl, Christine Keeler, in what became known as the Profumo affair.

4. 1967: The Six-Day War began between Israel and the neighboring states of Egypt, Jordan, and Syria.

5. 1968: U.S. Senator Robert F. Kennedy was shot in Los Angeles; he died the next day.

6. 1977: The Apple II, one of the first highly successful mass-produced personal computers, went on sale.

7. 1981: The Centers for Disease Control and Prevention reported that five men in Los Angeles were suffering from a rare form of pneumonia seen in patients with weakened immune systems, the first recognized cases of what would later become known as AIDS.

8. 1989: The Tiananmen Square Massacre occurred as Chinese troops and security police stormed through Tiananmen Square in Beijing, firing indiscriminately into the crowds of protesters.

9. 2004: Ronald Reagan, the 40th President of the United States, passed away.

10. 2013: The Guardian reported on the existence of the PRISM surveillance program after leaks by Edward Snowden.