Answer:
Explanation:
battle of Lexington and concord
April 1775; British troops march out of Boston to find arms and munitions stockpiled by the Patriots; British troops are chased back to Boston and suffer heavy losses; known as the "shots heard around the world," and recognized as being the beginning of the American Revolution
The launching of Sputnik, the first satellite on October 4, 1957 by Soviet Union. the US then wanted to beat them in the race to prove they are better and catch up to them and be ahead of them.