Final answer:
Antigonus established rule over Alexander the Great's homeland of Macedonia and Greece after a period of civil war following Alexander's death.
Step-by-step explanation:
After a period of instability following Alexander the Great's death, his empire, including Macedonia and Greece, was eventually controlled by the generals who served under him. This transition happened because Alexander did not name an heir which led to a power struggle among his generals. It was not until the end of the wars by 280 BCE that three major Hellenistic monarchies emerged, founded by Antigonus, Ptolemy, and Seleucus. These monarchies supplanted local rule and established dynasties that would govern the lands of the Greek empire for many years.
Antigonus was able to establish rule over the homeland of Alexander's empire, Macedonia and Greece, after the civil wars that ensued post Alexander’s death. The establishment of these Hellenistic kingdoms marked the beginning of a new era where Greek culture and language spread far and wide, merging with local traditions in what became known as the Hellenistic period.