From the 1850s to 1950s, most immigrants entering the united states arrived at
a. cities in the midwest
b. ellis island
c. cities in the west
d. port cities in the south

From the 1850s to 1950s, most immigrants entering the United States arrived at Ellis Island. The correct option among all the options that are given in the question is the second option or option "B". The other choices can be neglected. I hope that this is the answer that has actually come to your desired help.

Dcalifornia they have the most people with 200+ people per square mile