Editing Seleucid Empire (section)

===Rise of Seleucus===
[[File:Seleuco I Nicatore.JPG|thumb|Bronze bust of Seleucus I Nicator.]]
Alexander's generals, known as [[diadochi|{{translit|grc|diadochi}}]], jostled for supremacy over parts of his empire following his death. [[Ptolemy I Soter]], a former general and then current satrap of [[Egypt]], was the first to challenge the new system, which eventually led to the demise of Perdiccas. Ptolemy's revolt created a new subdivision of the empire with the [[Partition of Triparadisus]] in 320 BC. [[Seleucus I Nicator|Seleucus]], who had been "Commander-in-Chief of the [[Companion cavalry]]" ({{translit|grc|hetairoi}}) and appointed first or court [[chiliarch]] (which made him the senior officer in the Royal Army after the regent and commander-in-chief Perdiccas since 323 BC, though he helped to assassinate him later) received [[Babylonia]] and, from that point, continued to expand his dominions ruthlessly. Seleucus established himself in [[Babylon]] in 312 BC, the year later used as the [[Seleucid era|foundation date]] of the Seleucid Empire.