1517: Martin Luther sends his Ninety-five Theses to Albert of Brandenburg, Archbishop of Mainz, precipitating the Protestant Reformation

1541: Michelangelo finishes painting “The Last Judgment” on the altar wall of the Sistine Chape in Vatican City [1]

1876: Great Backerganj Cyclone of 1876 ravages British India (modern-day Bangladesh), killing over 200,000

1917: British War Cabinet gives final approval to issue the Balfour Declaration to support a “national home for the Jewish people” in what is then Ottoman-controlled Palestine

1918: The Spanish flu kills 21,000 people in the US in a single week

2011: The world population reaches 7 billion inhabitants according to the United Nations

Source: Onthisday.com