Answer:
The Olmec ball game, religious concepts, blood sacrifice, calendar, writing, and astronomy was later used and adapted by other Mesoamerican civilizations. Plus, they laid the foundation for complex agricultural-based society in Mesoamerica.
Explanation:
Dropping the bombs on Hiroshima and Nagasaki were not a military necessity because from other reports, the Japanese were about to surrender anyway. It was justifiable because we were scared and we acted because we were threatened.
Herbert Clark Hoover was the 31st president of the United States through the years 1929 - 1933.