What was a major pull factor that brought immigrants to the united states between 1830 and 1850?

jobs and economic opportunity were a pull factor

"a shortage of traditional labor created new opportunities in the workplace. a major cause of the internment of japanese americans during world war ii was. racial prejudice. in the early 1940's, the "destroyers-for-military-bases deal" with great britain and the lend-lease act were evidence that the united states."