It depends on your definition of "pushed" or "forced". People often migrated from country to city for economic reasons. It was the only way to make a living for

It depends on your definition of "pushed" or "forced". People often migrated from country to city for economic reasons. It was the only way to make a living for many. Others simply wanted to make more money or take advantage of other opportunities. You might say economic circumstances forced them to give up agriculture for factory work.