I believe that would be African Americans but check up on my answer I'm not quite sure.
Europeans
Irish,Catholics
the first imigrents were africans but not by choice
Britain and other European countries.
Ellis Island.
1909
the first potato planted in the US was in New Hampshire.
The Germans and other Eurpean immigrants.
Ellis Island
The Europeans were first with over 30 million immigrants in total -Snoady
The names of the first illegal aliens in the United States are not known. There are millions of illegal immigrants that are in the US, as of 2014.
Ellis Island