Nationalism (in the US and worldwide) during WWI

Main question to address in the essay: what role did nationalism play in the war and on the home front in WWI? Questions to consider in the essay: which nations lost the most territory in WWI? what new countries emerged? how were league of nations trusteeships different from colonies? did the collapse of empires and the emergence of new nations weaken or intensify nationalism among Europe’s people? what were the consequences of this development?