705 – Empress Wu Zetian abdicates the throne, restoring the Tang dynasty.
1819 – By the Adams–Onís Treaty, Spain sells Florida to the United States for five million U.S. dollars.
1848 – The French Revolution of 1848, which would lead to the establishment of the French Second Republic, begins.
1853 – Washington University in St. Louis is founded as Eliot Seminary in St. Louis, Missouri. 1865 – In the U.S., Tennessee adopted a new constitution that abolished slavery.
1855 – The Pennsylvania State University is founded in State College, Pennsylvania (as the Farmers’ High School of Pennsylvania)
1879 – In Utica, New York, Frank Woolworth opens the first of many of 5 and dime Woolworth stores.
1885 – The Washington Monument was officially dedicated in Washington, DC. It opened to the public in 1889.
1909 – The sixteen battleships of the Great White Fleet, led by USS Connecticut, return to the United States after a voyage around the world.
1924 – U.S. President Calvin Coolidge becomes the first President to deliver a radio broadcast from the White House.
1948 – Communist revolution in Czechoslovakia.
1958 – Egypt and Syria join to form the United Arab Republic.
1969 – Barbara Jo Rubin became the first woman to win a U.S. thoroughbred horse race
1974 – The Organisation of the Islamic Conference summit begins in Lahore, Pakistan. Thirty-seven countries attend and twenty-two heads of state and government participate. It also recognizes Bangladesh
1986 – Start of the People Power Revolution in the Philippines.
1997. 1997 – Scottish scientist Ian Wilmut and colleagues announced that an adult sheep had been successfully cloned. Dolly was actually born on July 5, 1996. Dolly was the first mammal to have been successfully cloned from an adult cell.
2014 – President Viktor Yanukovych of Ukraine is impeached by the Verkhovna Rada of Ukraine by a vote of 328–0, fulfilling a major goal of the Euromaidan rebellion.