I believe that immigrants migrated to the United States because of the abundance of resources and work opportunities. Many also fled from wars and sought safety for their families and themselves. Difficulties that immigrants from the 19th century faced ,and still face now, was the idea of Racism and also how society saw them. Many also had trouble finding places to live or people to communicate with. Many formed small groups and communities to stay together with the people of their own race and culture for safety.
They wanted to keep trade with china open. :)
Answer:
An extermination camp was a place to send people to be killed. Most of this happened during Adolf Hitlers rule when he killed millions of Jews. These camps were a fast easy way to exterminate a group of people.
Ram Mohun Roy was an Indian scholar who set up educational societies.
