It's A
Irrigation was overused, the soil didn't get any rest (crop rotation is a younger invention), the result was salinization of the soil, which led to decline of Sumer.
Answer:
B. ended discrimination in the workplace based on color
C. ended discrimination in the workplace based on sex
E. ended discrimination in the workplace based on religion
Explanation:
An important resource that Spain wanted from the colonies was gold.
It's gotta be James Blaine.
In both forms, powerful countries dominated weaker ones for economic gains.