Irrigation of the crops led to salinization of the soil, Sumer was located on a flat plain that provided no natural barriers to invasion, and the land became to swampy to grow adequate crops.
Answer:
Each Mongol clan was led by a khan, or chief.
Explanation:
The Mongolian leaders received the denomination of "Khan". They were the social and military leaders of the different tribes that formed the Mongol Empire. The most famous khans were Genghis Khan and Kublai Khan, among others.
Answer:
Slavery
Explanation:
They wanted to keep slavery going, rather than abolish it.
Answer:
Upward control (sovereignty residing at the lowest levels of authority), political equality, and social norms.
Explanation:
