Why did Denmark join WW1?

During World War 2 who was the head of England? Did Japan gain or lose land as a result to WW2? Why were new weapons created during World War 1? Living conditions of the western front? What problems led to the Civil War? What prepared the militia for the arrival of the British soldiers at Lexington? In World War 2 What was a west pack tour? What is known as the American public increased public awareness of the aircraft industry after world war 1? When was O Canada made Canada's anthem? What were the vietcong tactics during the Vietnam war? Where did the word beret come from? Who is are leader of are country? Did Ted Nugent perform his military service during the Draft Years was he a Draft Dodger? Was there a real Hogan's Heros operation in World War 2? How many troops does Germany have today? What is a cadets hat called? Why did Filipino insurrection against the United states take the former of guerrilla warfare rather than all out war? What were the names of the rockets that flew over and blew up in England? Who invented the first armored warship? The turning point of the Pacific war was the .?