List 3 roman contribution to democracy

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

Where were the trials to review evidence in cases against high-ranking nazi officials accused of war crimes held?

In 1819, what did the united states obtain from spain for $5 million?