3 important Kingdoms established after the death of Alexander

As Alexander died without a successor, 3 important Kingdoms established by Alexander's officers, after the death of Alexander
1. At Macidonia.
2. At Africa as Egypt it centre. Ptolomy was the ruler. Ptolemy Philadelphus.
3. Seleucid Empire in Asian provinces. It covered all the Asian provinces of Alexander. Seleucus Niketor was the ruler. Cyria was its capital.
Named as Seleucid Empire