women were granted the right to vote, after ww1
<span>This is of course somewhat of a subjective question, but in general most would agree that in general expansion was not justifiable since the Mexicans and Natives were doing nothing to provoke the US. One could argue it was justifiable since Americans needed more land. </span>
Answer: The work of Isaac Newton identified certain laws of physics "laws of motion" that helped define the movement of the planet around the sun, thus further confirm the idea that sun was center of solar system, an idea which had been earlier proposed by Nicolaus Copernicus, an astronomer from Poland.
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