Which statement best completes the diagram? Cause
Effect
The Monroe Doctrine
?
O A. The United States gains new colonies.
B. Russia gains territory in North America.
C. Europe loses power in the Americas.
D. Spain declares war on the United States.

b

Explanation:

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: