What did Mesopotamian settlers create to protect crops from seasonal droughts? canals clay pots mud wals reed dams

i know i'm late but its canals :)

Explanation:

i took the test on Edge 2020 :)

the dust bowl, otherwise known as the dirty thirties, was a huge dust storm that killed multiple (and i mean  multiple) farmer's crops, leaving them homeless, and foodless, and jobless. in california, there were 5.7 million residents, and the population shrank as mexicans were repatriated. however, when the dustbowl happened, a lot of people began to move to california. by 1940, 250,000 people had arrived. therefore, your answer would be  the population increased, massively.  i hope this !

explanation:

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