Before his death, Seleucus tried to deal with the administration of Asia Minor.
The region was ethnically diverse, consisting of Greek cities, a Persian aristocracy and indigenous peoples.
Seleucus perhaps tried to defeat Cappadocia, but failed.
Lysimachus' old officer Philetairos ruled Pergamon independently.
On the other hand, based on their names, Seleucus apparently founded a number of new cities in Asia Minor.

Few of the letters Seleucus sent to different cities and temples still exist.
All cities in Asia Minor sent embassies to their new ruler.
It is reported that Seleucus complained about the number of letters he received and was forced to read.
He was apparently a popular ruler.
In Lemnos he was celebrated as a liberator and a temple was built to honour him.
According to a local custom, Seleucus was always offered an extra cup of wine during dinner time.
His title during this period was Seleucus Soter ("saviour").
When Seleucus left for Europe, the organizational rearrangement of Asia Minor had not been completed.
Before his death, Seleucus tried to deal with the administration of Asia Minor. The region was ethnically diverse, consisting of Greek cities, a Persian aristocracy and indigenous peoples. Seleucus perhaps tried to defeat Cappadocia, but failed. Lysimachus' old officer Philetairos ruled Pergamon independently. On the other hand, based on their names, Seleucus apparently founded a number of new cities in Asia Minor.
Few of the letters Seleucus sent to different cities and temples still exist. All cities in Asia Minor sent embassies to their new ruler. It is reported that Seleucus complained about the number of letters he received and was forced to read. He was apparently a popular ruler. In Lemnos he was celebrated as a liberator and a temple was built to honour him. According to a local custom, Seleucus was always offered an extra cup of wine during dinner time. His title during this period was Seleucus Soter ("saviour"). When Seleucus left for Europe, the organizational rearrangement of Asia Minor had not been completed.
Seleucus I Nicator