What led new england farm girls to resign from working in the mills and return to their family farms in the 1840s?

In the 1840s, New England farm girls resigned from working in the mills and return to their family farms because they fear of losing their jobs and their boarding houses became overloaded so the rental fee was costly and it didn't offer worthy foodstuff and home materials. Their wages also are even if they work longer hours. 

answer: the risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: