Who was the first african-american to serve as a justice on the united states supreme court?

Why do you suppose the founders of the united states were positively influenced by the enlightenment period in europe? (select all that apply.)

What were some of the things done to the colonists by king george iii

What is the rule relating the ratio of marginal utility to prices of two goods at the optimal choice? explain why, if this rule does not hold, the choice cannot be utility-maximizing.