Old immigrants mostly came from Northern and Central Europe, especially England and its territories. Slaves also immigrated to the United States because they wanted to obtain work in the plantations. The old immigrants were in pursuit of new land. Most of the people from England felt that the church was not separated enough from the state, and they came to America to find religious freedom.
The old immigrants also came to America in search of a legitimate government, as most of their country experienced autocratic rule. The new immigrants, on the other hand, included people from Eastern and Southern Europe, mostly Italy, Poland, and Russia. People from China and Japan also immigrated to America to seek out more prosperous and superior economic opportunities.
The reason for this is that the country began to have considerable industrial growth after the cold war. The southern and eastern Europe had poor economic conditions such as poverty and unemployment. Since America has been called the land of dreams, they set out to come and find jobs so that their families could survive.