What factors pulled immigrants to the united states

Immigrants would come to the united states to seek refuge if their home country was under siege or if there was war. They would come to get a better life or a better job than the one they had, and they would come to have more freedoms and opportunities than they may have had before  

Where are the statements, only the paragraph is here

Ibelieve b because alexander graham bells wife’s and mother was deaf. hope this you out