They feared communism would spread.
Answer:
Brunelleschi
Explanation:
Brunelleschi rediscovered the principles of linear-perspective construction known to the Greeks and Romans but buried along with many other aspects of ancient civilization during the European Middle Ages.
As a "Continent ravaged by a series of revolutionary movements".
After the events of the Second World War, the European countries which held colonies in the African Continent were no longer able to assign economic resources for their adequate maintenance, as they were heavily indebted due to the war. This lack of resources and subsequent mismanagement lead to a series of revolts within the African Colonies, which at the time were French Algeria, Portugues Angola, the Belgian Congo, and British Kenya.
Jean Baptiste Charbonneau was a Native American-French Canadian explorer, guide, fur trapper trader, and military scout during the Mexican American War.
You can also know him as the son of a Shoshone Indian known as Sacagawea, who guided and helped Lewis and Clark explore the Louisiana Territory.