ancient mesopotamia By 07262007 3000 BCE Sumerians Sumerians made their first zuggerat 3000 BCE Sumerians Sumerians made the wheel 1800 BCE Babylonians Hammurabi made the first codes of law 1200 BCE Haitians Haitians made the alphabet 650 BCE army Assyrian army 570 BCE hanging gardens of Babylon the hanging gardens of Babylon was made