What happened on April 30 1950?

Name important dates that happened from the end of ww1 to the end of World War 2? Why did war in Afghanistan happen? Which group urged Southern secession? What was sinking the ships and WW2? It was right to drop the atomic bomb? What was the act of congress that put civilians in military service during World War 1? Why was the Bay of Pigs a failure? Can someone explain the origination of the term sniper? The invasion of what country caused Britain and France to declare war on Germany? How much did it cost the Union to participate in the Civil War in 1865? Who commanded the Strategic Air Command of the US Air Force 1948-57? What is the difference between medieval and modern day weapons? Who was winning the war in Europe in 1940? Why did they use dogs during World War 1? How did the Normans levers in battle? How did the filipino kill Andres bonifacio and where did Andres bonifacio die? Why is elizabeth MacArthur famous? What statement best explains how Dadaism related to World War 1? What does cavalry mean durng the civil war? What is the name of the civil war battle that was fought a month after the civil war was over and the south had surrendered at appomattox courthouse?

What happened on April 30 1950?