How did river valleys lead to the disappearance of hunter-gatherer society

they are the executive, (president and about 5,000,000 workers) legislative (senate and house of representatives) and judicial (supreme court and lower courts). the president of the united states administers the executive branch of our government.

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:

us court of appeals for the 11th circuit