What role did alliances play in world war 1 and what were the reasons?

During the 1960s, how did the neural movement promote the chicano movement

One of the observations by someone who was present for roosevelt's speech was, "its clarity, logic, and sincerity struck us." quote one example from the text that you would describe as clear, logical, or sincere. explain the language in your chosen quote correctly, and tell why it can be considered clear, logical, or sincere.

Brainliestttme : ) what demographic changes occurred after world war ii?