If you're looking for the name of someone who studies the stars it would be an astronomer.
D. It was an area Germans lived in but was owned by Czechoslovakia
The Sudetenland used to be former territory of the German Empire. Adolf Hitler had expanded German territories through aggressive-diplomacy which Britain and France had tried appeasement.
The GI Bill helped World War II veterans by "(3) giving them several types of economic <span>assistance" such as offering them the opportunity to attend college for free. </span>