In two to three sentences, name one well-known individual in american history and explain how his or her actions changed american society. did the person's actions have any unintended consequences?

nativists tried to get rid of the immigrants as they thought they were going to ruin the u.s.  

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939

it is a : ) always outside of government control

people can see all information on a topic and believe it because of technology