Many of the immigrants who came to the united states in the late 1800sa. often returned to their home countriesb. were skilled laborers and merchantsc. were either protestant or catholicd. came to escape famine and starvation

d. came to escape famine and starvation.

Explanation:

During the 1800s, immigration to the United States was high. People from various parts of the world fled to America escaping famine, starvation and crop failure. These people often believed that America was a land of opportunity, and they were hoping to have a better life in this continent. Some of them were also escaping religious persecution. These people usually came from Germany, Ireland and England.