What made these immigrants different from the immigrants, who came from Northern and Western Europe?

Unlike earlier immigrants, who mainly came from northern and western Europe, the "new immigrants" came largely from southern and eastern Europe. Largely Catholic and Jewish in religion, the new immigrants came from the Balkans, Italy, Poland, and Russia.

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.

biological/genetic factors means they were born or predisposed to have something. nothing can really change it, and you can't really do much to "fix" it. it isn't something learned

these are the biological factors:

adrian is relatively tall and he is on the basketball team

(adrian can't ever stop being tall or force himself to be tall. likely one or both of his parents are tall as well and they passed on the tall gene. he probably does basketball because he is tall)

the rest are environmental/cultural factors. these are things that are taught to us. for example, cynthia wasn't born saving pocket money, her family most likely taught her this (environmental factor)

hope this !