What was one similarity between the "old" and "new" waves of immigration in the 1800s?
immigrants from both periods created ethnic neighborhoods in american cities.
immigrants from both periods were from western and northern europe.
immigrants from both periods were from eastern and southern europe.
immigrants from both periods succeeded as skilled workers and landowners.

The answer to the given question above is the first statement. That one similarity between the "old" and the "new" immigration waves in the 1800s is that those immigrants who came from both eras established ethnic neighborhoods in the cities of America. Hope this helps.

The correct answer to this question is A) immigrants from both periods established their own neighborhoods in major American cities.

A similarity between "old" and "new" waves of immigration in the 1800s was that immigrants from both periods established their own neighborhoods in major American cities.

Immigrants created the United States. Immigration waves were constant since the beginning of the colonies in America. First, the major waves came from Western Europe. Then, the majority of immigrants came from Eastern Europe countries. After them, Chinese and Japanese migration flooded the United States. Immigration offices were established in the East Coast, in Ellis Island, New York; and the West Coast, in Angel Island, in San Francisco, California. And yes, a similarity between "old" and "new" waves of immigration in the 1800s was that immigrants from both periods established their own neighborhoods in major American cities such as Boston, New York in the East Coast, or San Francisco or Los Angeles in the West Coast.

B. to provide flood control 
i believe