D) All had civilizations that were centered along major rivers. HOPE IT HELP PLAESE GIVE BRIANIEST XD
Answer:
the red scare was a mass hysteria when people felt threatened by communism due to the cold War between the Soviet Union and the U.S. the first red scare was in the 1920s because of the Russian revolution that had just happened and the citizens of the U.S were scared that their country would too turn to a communist government.
In the diagram, point O is the center of the circle and AC and BD intersect at point E. My sister had this same question
