Law itself arose in prehistoric times, emerging from custom, certainly as early as the Cuneiform Laws in 2350 BCE, the Code of Hammurabi in 1700 BCE, and the Laws of Moses, particularly the Ten Commandments, dating perhaps as far back as the Exodus from Egypt in roughly 1540 BCE and certainly codified during the period of the Babylonian exile. There were the law books of Manu in India, the Legalist School of China, and the extensive laws of the Aztecs and the Incas in the Americas. As civilizations emerged, so did law.