How new technology canged warfare during world war 1

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.

What major land feature is located at 0* and 20* e? a sahara desert b kalahara desert c congo basin d the alps

Poland a: nato b: warsaw pact c: not a member of either alliance