Look for a historic event called Paul revere between 1497 and 1781 and you will find your answer
this is my attachment answer hope it's helpful to you
Answer:
(C.) Trans-Saharan trade routes were primarily land based; the Silk Road was both land and sea based
Explanation:
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.