Babylonia was an ancient Mesopotamian kingdom located between the Tigris and Euphrates Rivers in modern-day Iraq. It consisted of many cities ruled by a king with a class system divided between nobles, free men, and slaves. The economy was based on agriculture including crops like barley. Socially, families and inheritance were important, and education was available to wealthy children. Religiously, Babylonians were polytheistic and celebrated gods through festivals. Culturally, they made contributions including the Code of Hammurabi, advances in science like the lunar calendar, and impressive architectural structures like ziggurats.