What are three important events that happened in 1950?

In 1950, the Korean War began when North Korea invaded South Korea, marking a significant conflict in the Cold War era. The United States and other United Nations member states intervened to support South Korea, while China and the Soviet Union backed North Korea. Additionally, the first modern credit card, the Diners Club Card, was introduced, changing consumer spending behaviors. Lastly, the United States developed and tested the first hydrogen bomb, escalating tensions in the nuclear arms race.