What brought people to the United States in the first half of the 19th century?

E New territories, rapidly expanding businesses, the California goldfields, and the rapid growth of industry in the East brought people to the United States.

A Freedom of religion and way of live brought people to the United States.

B Slavery and ownership brought people to the United States.

C The prospect of adventure brought people to the United States.

D Freedom of speech and the press brought people to the United States.