Determining Cause and Effect How did the California Gold Rush lead to
the expansion of cities?

Explanation:

It brought people from all around the world increasing more population

"a shortage of traditional labor created new opportunities in the workplace. a major cause of the internment of japanese americans during world war ii was. racial prejudice. in the early 1940's, the "destroyers-for-military-bases deal" with great britain and the lend-lease act were evidence that the united states."

you didn't list the options. however, a few communist countries today are: the people's republic of china, north korea, and cuba.