What two Communist-related events occurred in 1949 and frightened Americans?

Explanation:

There are several, but historians argue the most terrifying event for the US was the Soviet atomic bomb detonation.

September 1949, the Soviet Union exploded its own atomic bomb and this shocked the U.S. because now both nations could destroy each other. -This was the world's first human-made satellite.

The second event was the cold war. The main reason why the United States was fearful of the Soviet Union in the "Cold War" was because the US was afraid that communism would spread around the world and ultimately to the US--which they viewed as being a threat to their way of life.

- "a new era of american politics began with jackson's election in 1828, but it also completed a grand social experiment begun by the american revolution. nevertheless, jacksonian democracy represented a provocative blending of the best and worst qualities of american society."

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i believe that the correct answer is a canadian hero.

explanation: he is celebrated as a national hero in canada for successfully thwarting a united states takeover of canada during the war of 1812.