On the map, we can see that between the Tigris and the Euphrates rivers is the region of Mesopotamia, where the agriculture and the urban civilization flourished. Towards the mouth of these rivers is the region of Sumer. The earliest writings come from it, so we can say that the history begins here, around the year 5 000 B. C.
The Sumerians were farmers and traders and were grouped into city-states, ruled by a priest-king. From time to time one city dominated others cities and formed a State like Babylon next to the Euphrates (1800 B.C). The King Hammurabi is the creator of a code of laws, the most famous of antiquity.
Later the Assyrians (look the map to the north of Mesopotamia) formed an empire that lasted from 1305 B.C. to 612 B.C. They practiced war and sought the looting and the death of the defeated.
But the Babylonian empire with the king Nabolasar defeated the Assyrians in 625 B.C. Then, With the King Nebuchadnezzar, Babylon becomes the most powerful city in the world, which was embellished with the hanging gardens. Finally, it was destroyed by Cyrus, the great Persian king of 539 B.C.