President Barack Obama addressed the Muslims of the world in a speech in Cairo, saying America has a common cause with Islam and never will be at war with the faith.
Congress approved the 19th Amendment to the U.S. Constitution guaranteeing citizens the right to vote regardless of their gender, and sent it to the states for ratification.
The first Pulitzer Prize is awarded. Every year, the prestigious award honors outstanding journalistic achievements. It was established with money bequeathed to Columbia University by publisher Joseph Pulitzer.
The Montgolfier brothers demonstrate the first hot air balloon. The flight of the montgolfière lasted only about 10 minutes, but it secured the French inventors a place in the history books.