1. Greece: Greece was initially assigned to Antipater, who served as Alexander's regent in Macedonia during his campaigns. After Antipater's death in 319 BCE, his son Cassander took control of Greece and made himself the ruler of Macedonia as well, thus uniting the two regions under his rule.
2. Macedonia: Macedonia, the heartland of Alexander's empire, was initially given to Philip Arrhidaeus, Alexander's half-brother. However, due to Philip's intellectual disabilities, he was used as a puppet ruler by various Diadochi vying for power. Eventually, Cassander, who had secured control of Greece, also gained control of Macedonia and ruled both regions until his death in 297 BCE.