Hammurabi reigned as the first Babylonian dynasty's sixth king from 1792 BC to 1750 BC. During his reign, Hammurabi conquered the city-states of Eshnunna, Larsa, and Mari and brought nearly all of Mesopotamia under Babylonian rule. He is also known for issuing the Code of Hammurabi, which is one of the first law codes to establish the presumption of innocence.
Sargon of Akkad reigned as the king of the Akkadian Empire from 2334 to 2284 BC. The first person to rule the Akkadian Empire, Sargon is sometimes recognized as the first person to rule over an empire in recorded history. He is credited with founding the Old Akkadian or Sargonic dynasty, which ruled for several years after his death.
Ashurbanipal reigned as the king of the Neo-Assyrian Empire from 669 BC until his death in 631 BC. Widely regarded as the last great king of Assyria, Ashurbanipal is best remembered for the establishment of the famous Library of Ashurbanipal. The library has great historical significance as it holds texts like the Epic of Gilgamesh, the earliest surviving notable literature.
Khosrow I was a 6th-century Persian king of the Sasanian Empire. Though most of the information on him is known through legends, he is believed to have been a patron of the arts. He introduced major tax reforms and also brought changes to the Sasanian bureaucracy.