16,000 years ago or 19,000 years ago
Answer:
According to Article II of the U.S. Constitution, the president must be a natural-born citizen of the United States, be at least 35 years old, and have been a resident of the United States for 14 years.
Explanation:
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The correct answer is B, "the domino theory". American president Dwight Eisenhower (1890-1969) coined the term in a 1954 speech where he explained the importance of Vietnam for "the free world".
He used the expression to argue that if South Vietnam became communist, this would generate a chain reaction and many near countries would also become communists. It was a classic Cold War idea: this war was fought in the manner of influencing zones.