Why did vassals have to serve lords?

the answer is a) james madison.

he 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:

the founding fathers did not think women were asmportant as mern were and men could do more and better things then women

a. always outside of government control.