Answer: True
Explanation:
Dollar diplomacy was a form of US foreign policy developed by President William Howard Taft, which consisted of using the economic power of the United States over Latin America and East Asia (with loans), rather than using military force.
It should be noted that it was President Roosevelt (Taft's predecessor) who laid the foundation for this policy. All this in order to protect the interests of the United States in Latin America, by encouraging stability in those countries and expanding US commercial interests in those nations.
Answer: The North had way more manpower.
Explanation: The north was always populated to begin with since the living standards were a lot higher than in the south. And when the northern states "forbided" slavery a mass migration of African Americans from southern states moved to the northern states. They migrated to find a better life up in the north(before the civil war). When president lincoln gave the to go sign that African Americans were able to enlist in the army during the American civil war it gave the North a manpower increase, one that the south didn't have since the south did not allow African Americans to be enlisted in thir arms.
It meant that as soon as one country falls under communist control, another country would fall and so on. Vietnam at the time was split into North (communist) and South (being attacked by North) and the US didn't want communism to spread, reasoning that it might eventually come to the US if nothing was done.