The Crusades is the series of wars between the two groups but if you're looking for a certain one I can further elaborate.
Answer:
The farmers in Sumer created levees to hold back the floods from their fields and cut canals to channel river water to the fields. The use of levees and canals is called irrigation, another Sumerian invention
Explanation:
c. Chivington boasted of killing many Native Americans
Answer:
option A is the correct answer...
