What is one factor that contributed to the fall of the roman empire?

Even though both ww1 and ww2 were in many ways the same conflict with basically the same countries facing off against each other, the way each war started was significantly different. the question is how what were the differences on how they started

Why did jefferson make the louisiana purchase?

Who was on trial at the nuremberg trials a) japanese military officials. b)nazi leaders. c) communist germans