1 of 7 | People watch a live broadcast of Emperor Akihito's abdication ceremony on the screen near the Shinjuku station in Tokyo on April 30, 2019. File Photo by Keizo Mori/UPI | License Photo April 30 (UPI) -- On this date in history: In 1789, George Washington was inaugurated as the first president of the United States. Advertisement In 1803, the United States more than doubled its land area with the Louisiana Purchase. It obtained all French territory west of the Mississippi River for $15 million. In 1812, Louisiana entered the union as the 18th U.S. state. In 1927,...