Because they needed social struture
Although the effectiveness of these tactics can be question, it was in "a Korea and Indochina" that the Eisenhower administration effectively use brinkmanship, since this was part of the Cold War.
Utilization of trade routes throughout africa
"<span>B. regulating the stock market" and "C. paying pensions and benefits for the elderly, children, and the handicapped" are still tactics that are used today. </span>
I believe it’s D, the plantations were huge and far apart. So the population was scattered.