Answer:automobiles and airplanes, telephone and radio
which in return required mass production and brought people together.
Explanation:
In the 1840s, nativists believed that immigrants "could not fit into American society." During that year, the Nativists (or anti-immigrants) had raised their power over immigrants. They want to preserve their status in some certain established inhabitants of the nation over the claims of immigrants.
Answer:
When and were did it start/happen,who was involved.
Explanation:
knowing this will allow you to dig deeper