Answer
Babylon was the largest rival kingdom of Sargon II. Sargon II was the ruler of the Neo-Assyrian Empire, which was one of the largest and most powerful empires in the ancient world. Babylon was a powerful city-state in Mesopotamia that had a long and rich history. Sargon II and the Neo-Assyrian Empire were constantly at war with Babylon, and the two empires fought many battles over the years.