In the early 1800s, chinese immigrants established the first chinatowns in cities
along the western coast of the us.
along the eastern coast of the us.
in the midwestern us.
in the southern us.

The first wave of Chinese migrants arrived in America in the early 1800's, during a golden rush and the construction of an intercontinental railway, seeking economic opportunities. The first Chinese neighborhoods known as Chinatowns, appeared in cities on the west coast of the US, and initially were similar to ethnic enclaves founded by migrants from Europe. Initially, fewer ethnic groups were easily subjected to a transition to American culture.

The answer is: along the western coast of the US.

the answer here would be