How does the u. s. system of government ensure that officials are responsible to the people?

How long is a representative’s term of office

According to the law of supply,suppliers want to sell their product at prices

Which factor contributed to the rise of african empires such as ghana and mali ? a. their creation and involvement in trade networks b. they focused only on agricultural production. c. they didn’t engage in warfare with other nations d. their geographic location protected them from attacks.