Push and pull factors encourage people to leave their home countries and settle in a new one. What were some push and pull factors that influenced German and Irish immigrants in the mid 1800s? Responses declining agricultural conditions in their homeland and a booming job market in America declining agricultural conditions in their homeland and a booming job market in America persecution in their home country and pro-Catholic enthusiasm in America persecution in their home country and pro-Catholic enthusiasm in America family separation in their home country and the ability to keep the family together in America family separation in their home country and the ability to keep the family together in America labor oversupply in their home country and a welcoming population in America