How did darius i organize the persian empire politically?

newton is important because he contributed more to the development of science than any other person in history. isaac newton is remembered as the greatest scientific genius who ever lived. his discoveries about physics, light, and mathematics changed the world.

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.