330: Constantinople (Byzantium) becomes the capital of the Roman Empire

1189: Holy Roman Emperor Frederick I Barbarossa and 100,000 crusaders depart Regensburg for the Third Crusade

1751: Pennsylvania Hospital founded by Dr. Thomas Bond and Benjamin Franklin

1924: Daimler-Motoren-Gesellschaft and Benz & Cie begin their first joint venture (later merge into Mercedes-Benz)

1995: More than 170 countries agree to extend the Nuclear Nonproliferation Treaty indefinitely and without conditions to prevent the spread of nuclear weapons [1]

2000: India’s population officially reaches 1 billion – Astha Arora named India’s billionth baby

Source: Onthisday.com