What is defensitization?

What country lost the most troops in World War 1? What number is midway 721 and 727? Group of countries in special alliance? Who won the 7 day war? Who invented the 1861 springfield rifle musket? Who was one of only two senators to vote against the Tonkin Gulf Resolution? Which industry did Cornelius Vanderbilt control? Who was the Delhi Sultan at the time Timur invasion on India? What was lincokns initial goal at the start of the civil war? Why was the significance of appomattox in the civil war? What influence did the Normandy landing have on the war? Name associated with World War 2 turning point? Hommes qui font la guerre? What was the Valley Forge battle about? When was Banking University of Ho Chi Minh City created? Why were helicopter invented? Who is federick Douglass? Why were codes used in the civil war? What was the outcome of People v Croswell? What were two weapons of World War 2?