George Washington is inaugurated as the first U.S. president.
The presidency of George Washington began on April 30, 1789, when Washington was inaugurated as the first president of the United States, and ended on March 4, 1797. Washington took office after the 1788–89 presidential election, the nation’s first quadrennial presidential election, in which he was elected unanimously.
The United States doubles in size through the Louisiana Purchase, which was sold by France for $15 million.
In late April 1803, with the stroke of a pen and the exchange of just $15 million, the United States nearly doubled in size. With the Louisiana Purchase, the U.S. acquired nearly 827,000 square miles of French-held land for just four cents an acre.
The George Washington Bridge, linking New York City and New Jersey, opens.
The George Washington Bridge was dedicated on October 24, 1931, with a ceremony attended by 30,000 guests. The opening ceremony was accompanied by a show from military airplanes, as well as speeches from politicians including New Jersey governor Morgan Foster Larson and New York governor Franklin D. Roosevelt.
U.S. troops invade Cambodia to disrupt North Vietnamese Army base areas.
On April 30th of 1970, President Richard Nixon declared to a television audience that the American military troops, accompanied by the South Vietnamese People’s Army, were to invade Cambodia. The invasion was under the pretext of disrupting the North Vietnamese supply lines.