The area of land between the persian gulf and the mediterranean sea, with the tigris and euphrates rivers running through it, is sometimes called what?

Fertile Crescent

Explanation:

It is the Fertile Crescent as the shapes of the river formed a rough crescent shape that was ripe for farming due to the easy irrigation and moist soil.

the answer is the government.

basic principles: federalism, separation of powers, checks and balances, judicial review, representative democracy, limited government, rule of law, individual rights and responsibilities, consent of the governed, majority rule, popular sovereignty, equal protection.