During the Cold War<span> the United States and the Soviet Union engaged a competition to see who had the best technology in space. This included such events as who could put the first manned spacecraft into orbit and who would be the first to walk on the Moon. The Space Race was considered important because it showed the world which country had the best science, technology, and economic system. </span>
<span>The answer is Letter D. It is written in a tone that is appropriate for an explanatory essay than the other letters. Since the letters a,b,c, is informal for an explanatory essay. Letter D. explains the Neolithic Revolution with formality and proper use of words, than the other letters.</span>
The Crusades were a series of religious wars sanctioned by the Latin Church in the medieval period.
the German invasion of Poland is usally used as the beginning cause thats when great britain and france entered the war.
