The main responsibility of the United States State department is to handle foreign affairs.
Answer: A new permanent
Explanation:
On July 16, 1790, a compromise between Thomas Jefferson, Alexander Hamilton and James Madison—known as the Residence Act—was passed, declaring George Washington's selection of a site on the Potomac River as the nation's new permanent capital. As part of the agreement, the federal government assumed the states' debts.
It was primarily the "b. formation of the Vietcong in Vietnam" that led the Truman administration to expand the containment doctrine to include Asia, since this was seen as a threat to democratic principles in the west as well.
Assuming this is the same question you posted before, the better historical argument deals with the idea that World War II began in part from the failure of the Treaty of Versailles.
