section_path: Life/Reign and conquests
section_name: Reign and conquests
paragraph_text: Reign and conquests
  
  The first few years of Hammurabi's reign were quite peaceful. Hammurabi used his power to undertake a series of public works, including heightening the city walls for defensive purposes, and expanding the temples. The powerful kingdom of Elam, which straddled important trade routes across the Zagros Mountains, invaded the Mesopotamian plain. With allies among the plain states, Elam attacked and destroyed the kingdom of Eshnunna, destroying a number of cities and imposing its rule on portions of the plain for the first time.
  
  In order to consolidate its position, Elam tried to start a war between Hammurabi's Babylonian kingdom and the kingdom of Larsa. Hammurabi and the king of Larsa made an alliance when they discovered this duplicity and were able to crush the Elamites, although Larsa did not contribute greatly to the military effort. Angered by Larsa's failure to come to his aid, Hammurabi turned on that southern power, thus gaining control of the entirety of the lower Mesopotamian plain by c. 1763 BC.
  
  As Hammurabi was assisted during the war in the south by his allies from the north such as Yamhad and Mari, the absence of soldiers in the north led to unrest. Continuing his expansion, Hammurabi turned his attention northward, quelling the unrest. Soon after, he destroyed Eshnunna. Next the Babylonian armies conquered the remaining northern states, including Babylon's former ally Mari, although it is possible that the conquest of Mari was a surrender without any actual conflict.
  
  Hammurabi entered into a protracted war with Ishme-Dagan I of Assyria for control of Mesopotamia, with both kings making alliances with minor states in order to gain the upper hand. Eventually Hammurabi prevailed, ousting Ishme-Dagan I just before his own death. Mut-Ashkur, the new king of Assyria, was forced to pay tribute to Hammurabi.
  
  In just a few years, Hammurabi succeeded in uniting all of Mesopotamia under his rule. The Assyrian kingdom survived but was forced to pay tribute during his reign, and of the major city-states in the region, only Aleppo and Qatna to the west in the Levant maintained their independence. However, one stele (stone monument) of Hammurabi has been found as far north as Diyarbekir, where he claims the title "King of the Amorites".
  
  Vast numbers of contract tablets, dated to the reigns of Hammurabi and his successors, have been discovered, as well as 55 of his own letters. These letters give a glimpse into the daily trials of ruling an empire, from dealing with floods and mandating changes to a flawed calendar, to taking care of Babylon's massive herds of livestock. Hammurabi died and passed the reins of the empire on to his son Samsu-iluna in c. 1750 BC, under whose rule the Babylonian empire quickly began to unravel.