why did the united states join the north atlantic treaty organization in 1949?\n to improve relations with…

why did the united states join the north atlantic treaty organization in 1949?\n to improve relations with communist countries in eastern europe\n to protect against the soviet union and the spread of communism\n to share a common currency across all nations within the treaty\n to create a policy of using military force to combat terrorism
Answer
Brief Explanations:
The US joined NATO in 1949 during the Cold - War era. The main goal was to counter the Soviet Union and the spread of communism. Relations with communist countries in Eastern Europe were tense, not to be improved. There was no common currency in NATO at that time, and the concept of combating terrorism in the modern sense did not exist then.
Answer:
to protect against the Soviet Union and the spread of communism