False. The US were allied with South Vietnam and were fighting against the Vietcong.
C. People Sold More Stock, Which Caused Stock Prices To Continue To Fall.
Most people blamed Hoover and the Republicans for the depression and the failure to get out of it.
During the 1920s the Republicans dominated the presidential elections and controlled both housed in 1929, because of that people blamed the Republicans and their candidate for the depression what gave the opportunity to the Democratic Party to win over the elections.
B. Planters from Barbados and their slaves.