How did the Persian Wars change the relationship between Athens and Sparta? O They joined together to form a single city-state to fight off common enemies.
O They worked on opposite sides of the conflict and kept fighting each other.
O They no longer wanted to depend on each other for help.
O They started forming a common Greek identity and culture.

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.

Einar sees alexandra every day across the room in his history class but has never talked with her. einar likes the way alexandra looks, including the way she dresses and how she wears her hair. he's even more attracted to her apparent intelligence and the way she handles herself in class discussions and during interactions with the instructor. he'd like to know more about her, so he asks one of his friends about her. einar, using a passive strategy to gain information about her, is probably in the preinteraction awareness stage of any relationship that might develop between them. t/f

What are the five traits of a civilization?