Question 1 of 5
2 points
why is it useful for historians to base certain studies on the analysis of
historical themes?
o
a. there are fewer historical themes than there are regions or
periods.
o
b. all the cultures in a particular region respond to historical themes
in the same way.
o
c. the same themes apply to people living in very different times and
places.
o
d. experience has confirmed that analyzing themes is the most
effective approach to history.

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: