What were the events leading up the conflict?

When was d-day conceived? How does gone by Michael grant end? Where did Louis Riel die? What is a Tet Offinsive? How has fashion changed since World War 2? Was the USS Panay attacked by Japanese? What was the price of gold in 1942? When did gunpowder originate? Why did the Germans sink the Lustitania? Why is a new soldier called private? In 1932 a group of World War 1 veterans marched on Washington D.C. Known as the Bonus Army what did this group want? What were convoys used for in World War 1? In late 1862 and early 1863 grant failure to capture for the north because of the marshy ground? Who was the first sniper in the Civil War? How have we learn about soldiers firsthand experience during the civil war? Why were teeth pulled out in the holocaust? How did the confederates try to break the union blockade? What year was the Battle of Monmouth? What did D-Day lead to liberation of what capital? What were the challenges facing the newly-formed League of Nations and why was it so difficult to form a lasting agreement that would prevent another war?