May 23

Thursday 23, 2002:

The "55 parties" clause of the Kyoto protocol is reached after its ratification by Iceland.

Sunday 23, 1915:

World War I: Italy joins the Allies after they declare war on Austria-Hungary.

Wednesday 23, 1906:

Wright brothers are granted U.S. patent number 821,393 for their "Flying-Machine".

Sunday 23, 1813:

South American independence leader Simón Bolívar enters Mérida, leading the invasion of Venezuela, and is proclaimed El Libertador ("The Liberator").

Friday 23, 1788:

South Carolina becomes the 8th U.S. state to ratify the United States Constitution.

More on May, 23

• May, 23 in History
• People Born on May, 23
• They left us on May, 23