The origins of this empire are believed to be in a Semitic population that lived in Chaldaea and at an early time moved to the upper headwaters of the Tigris River.  
The origins of this empire are believed to be in a Semitic population that lived in Chaldaea and at an early time moved to the upper headwaters of the Tigris River.  They were subject to the Chaldaean King at Babylon until they achieved independence around 1250 BCE They rapidly eclipsed Babylon in power and became the dominant imperial power in Southwest Asia for the next 600 years.  FTP, name this empire whose greatest early king was Tigath-pileser I and lasted until the fall of Nineveh.
The origins of this empire are believed to be in a Semitic population that lived in Chaldaea and at an early time moved to the upper headwaters of the Tigris River.  
Assyria