Portal:United States/Anniversaries/April/April 30
- 1789 – On the balcony of Federal Hall on Wall Street in New York City, George Washington takes the oath of office to become the first elected President of the United States.
- 1803 – The United States purchases the Louisiana Territory from France for $15 million, more than doubling the size of the nation overnight.
- 1812 – The Territory of Orleans becomes the 18th U.S. state under the name Louisiana.
- 1900 – Hawaii becomes a territory of the United States, with Sanford B. Dole (pictured) serving as its first governor.
- 1939 – Franklin D. Roosevelt becomes the first President of the United States to appear on television, during a broadcast of the opening ceremonies of the 1939 New York World's Fair.
- 1973 – President Richard Nixon announces that top White House aids H.R. Haldeman, John Ehrlichman, and others have resigned over the Watergate Scandal.
On this day for the United States
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Events
- 1789 - On the balcony of Federal Hall on Wall Street in New York City, George Washington takes the oath of office to become the first elected President of the United States.
- 1803 - Louisiana Purchase: The United States purchases the Louisiana Territory from France for $15 million, more than doubling – overnight – the size of the young nation.
- 1812 - The Territory of Orleans becomes the 18th U.S. state under the name Louisiana.
- 1871 - Camp Grant Massacre takes place in Arizona Territory.
- 1894 - Coxey's Army reaches Washington, D.C. to protest the unemployment caused by the Panic of 1893.
- 1900 - Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
- 1900 - Casey Jones dies in a train wreck in Vaughn, Mississippi, while trying to make up time on the Cannonball Express.
- 1904 - The Louisiana Purchase Exposition World's Fair opens in St. Louis, Missouri.
- 1907 - Honolulu, Hawaii becomes an independent city.
- 1925 - Automaker Dodge Brothers, Inc is sold to Dillon, Read & Company for USD $146 million plus $50 million for charity.
- 1927 - The Federal Industrial Institute for Women, opens in Alderson, West Virginia, as the first women's federal prison in the United States.
- 1938 - The animated cartoon short Porky's Hare Hunt debuts in movie theaters, introducing Happy Rabbit.
- 1939 - The 1939 New York World's Fair opens.
- 1939 - RCA owned NBC begins regularly scheduled television service from its New York station with the opening ceremonies of the 1939 New York World's Fair broadcast.
- 1939 - Franklin D. Roosevelt becomes the first President of the United States to appear on television during the World Fair's opening ceremonies broadcast.
- 1947 - In Nevada, the Boulder Dam is officially renamed Hoover Dam again.
- 1973 - Watergate Scandal: President Richard Nixon announces that top White House aids H.R. Haldeman, John Ehrlichman, and others have resigned.
- 1995 - U.S. President Bill Clinton became the first U.S. President to visit Northern Ireland.
- 2001 - The Mitchell Report on the Arab-Israeli conflict is published.