What role did arch duke ferdinand play in the start of world war one

What was the president hoovers deaction to the early years of the great depression

Why did river valleys most farming impact the lives of neolithic peoples?

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.