Answer:
Scientists believe that Mashkan-shapir's collapse was caused in part by destruction of the fields by mineral salts. When mineral salts concentrate in the upper levels of the soil, it becomes poisonous for plants. In Mesopotamia, irrigation was essential for crop production.\
By the warrior classes dominating all other classes through the establishment of cities by the abundance of excess food that led to a ruling class through the craftsmen guilds.
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The agricultural revolution had a variety of consequences for humans. It has been linked to everything from societal inequality—a result of humans' increased dependence on the land and fears of scarcity—to a decline in nutrition and a rise in infectious diseases contracted from domesticated animals.
When a small part of the forest is cut down and burned, ashes are mixed into the soil, creating a fertile garden. This caused them to frequently have to move.
