On this day in history - April 15

What Happened On This Day – April 15

• 1994 The World Trade Organization is founded

  The WTO coordinates and strives to liberalize international trade. It has been criticized for ignoring and escalating the negative social and environmental side-effects of globalization.

• 1989 A small group of students initiates pro-democracy protest on Tiananmen Square in Beijing

  The death of reformer Hu Yaobang triggered the demonstrations, which grew in size and were brutally dispersed in the Tiananmen Square Massacre on June 4.

• 1986 The United States launches retaliatory air strikes against Libya

  Around 40 Libyans died in Operation El Dorado Canyon, including an infant girl. The attack was the United States' response to the bombing of a Berlin discotheque on April 5, in which 3 people had died.

• 1945 The German concentration camp Bergen-Belsen is liberated

  British and Canadian troops found about 53,000 prisoners inside the camp. Tens of thousands died before and after the liberation.

• 1935 The Eastman Kodak Company launches Kodachrome

  The photographic film was one of the most popular media used by professional and hobby photographers around the world. The product was discontinued in 2009 because of the advent of digital photography.