Question

which of the following best explains why us cities became segregated by culture and ethnicity in the late 1800s and early 1900s?
immigrants formed communities when they were shunned elsewhere.
city planners set aside neighborhoods for various ethnic groups.
foreign governments set up colonies in american cities.
government authorities forced immigrants to live in enclaves.

Explanation:

In the late 1800s and early 1900s, immigrants faced discrimination and were shunned in many places. As a result, they formed their own communities. City - planners did not set aside neighborhoods for ethnic groups in this way, foreign governments did not set up colonies in American cities in this context, and government authorities did not force immigrants to live in enclaves in the sense described.

Answer:

Immigrants formed communities when they were shunned elsewhere.