What is the main occupation in US?

Why was there a naval race between Britain and Germany? What was the famous saying that came out of the Battle of Bunker Hill? Where did persecution happen in world war 2? Was the eastern front of World War 1 the longest war in America? How did the victories of the militia led by George Clark n the West benefit the frontier settlers? How was it decided who won World War 1? In World War 2 where did children get evacuated from? Wars that happened in the 1980's? What strained German British relations before the First World War? How might russian's industries be affected ships not being able to travel on the rivers all year long? What instrument was used during World War 1 to detect the sound of submarines? When did The Gunpowder Plot first happen? I found two flags and was wondering if they actually meant anything one had the Soviet hammer and sickle next to a star and the other was a weird gear with a star inside of it? How did Al-Qaeda get started during the cold war? Which marked a turning point in World War 2 on the European front in favor of the Allied forces? Where is the info for world war soldiers? What naval ship carried the atomic bomb that was dropped on hiroshima? Why were German soldiers such good fighters? What event signaled to the beginning of WW2? What is the neutrality act?