Hammurabi's biggest contribution to modern, Western civilization is:

Hammurabi's lasting contribution to western society was his set of laws written on twelve stones and displayed publicly for all to see, the most common being, "Eye for eye, tooth for tooth." The laws are generally known as the Code of Hammurabi.

equal pay act of 1963. the equal pay act, signed in to law by president john f. kennedy on june 10, 1963, was one of the first federal anti-discrimination laws that addressed wage differences based on gender. they felt that this would prevent employers from undercutting future wages for men.

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.