This is what we call a "red scare." The first Red Scare happened after World War I -- which also was the time when communists came to power in Russia. (The Bolshevik Revolution began in Russia in 1917, during the time of the war.)
The second Red Scare came after World War II. During the war, the USA and the USSR had been allies -- although always somewhat uncomfortable allies. Together they fought to defeat German and Japanese aggression. But the USA and the USSR had very opposite views to one another. So after World War II ended, there was great fear in America again about the infiltration of communist ideas around the world.
The answer is the invention of the wheel. The invention of the wheel was not a factor of immigration.
The correct answer is C. It is during this time that Islamic scholars made advancements in technology, literature, philosophy, mathematics, asstronomy and the arts. It is this time where the Islamic world was ruled by caliphates. All Islamic scholars were ordered to gather and translate all of the world's knowledge.
Answer:
Its D.
Explanation:
Its D. because i got it right on ed2020