In the first half of the nineteenth century, the united states gained the most territory through:

In the first half of the nineteenth century, the number of immigrants increased, and the United States experienced

A. an increase in nativism.  CORRECT

B. an economic depression. wrong  

C. an rise in unemployment.  wrong

D. a decline in urban populations. wrong

answer: researching and understanding issues being considered by lawmakers.

explanation:

lobbying is the act of attempting to influence a politician's behaviour. lobbyists can be members of a constituency, organizations, businesses, non-profit organizations or professional lobbyists.

b]to spread the message of black power