Answer:
North America includes the United States and Canada and North America could be considered a Region
The main change is the countries the immigrants were coming from. The immigrants in 1840s were coming from the Western Europe mainly Ireland and Germany. Immigrants from Asia and Eastern Europe were coming a bit later while during the beginning of the 20th century most of the immigrants came from Italy.
Answer:
The scientific method.
Explanation: Hope this helps.
. They reduced competition in the western part of the ... affect western settlement in the late 1800s
