What Chinese invention changed warfare?

Four pre war conflicts were over what? What happened on Dec 24 1941 at the Philippines? How would you describe Valley Forge? What were the Prevention Acts of the Vietnam War? Why was the Bataan death considered war crime? Who is the current supreme commander of the Armed Forces? What was the transportation era? An e5 sergeant of marine infantry is the second most senior person in the group and disputes an e9 chief of navy medical corps assertion he's the senior ranking who commands this captive organization? What do the word mean rokets red glare? Whats the difference and simmilarities between a world war 1 nurse and a world war 1 Tommy? Which of these does not describe the northern states? What kind of weapons do the west Africans use? What act drafted American men into the military during World War 1? How did admiral chester nimitz learn of the Japanese plans at the batte of midway? What did boys were during world war 2? Who were Franco's supporters? What African countries were neutral in World War 2? What stockade was built George Washington to supply provisions to his troops? Why did the Germans surrender world war 2? What was the nick name of the development of the atomic bomb?