Cassander vs Gongsun Du

Cassander founded the city of Cassandreia on the site of the destroyed city of Potidaea in Chalcidice. The city became a major urban center in Macedonia and served as a symbol of his power and Hellenistic patronage.

Cassander ordered the rebuilding of Thebes, which had been destroyed by Alexander the Great in 335 BC. This act was intended to gain favor with the Greek city-states and to counter the legacy of Alexander, but it also demonstrated Cassander's political ambitions.

Cassander ordered the murder of Alexander IV, the son of Alexander the Great, and his mother Roxana. This act eliminated the last Argead heirs and allowed Cassander to claim the throne of Macedonia, though he faced opposition from other Diadochi.

Cassander participated in the coalition against Antigonus I at Ipsus. His forces contributed to the victory, but he did not gain significant territory. The battle secured his position in Macedonia and Greece, though he died a few years later.

Gongsun Du was appointed Administrator of Liaodong commandery by the Han court. He used his position to establish an independent regime, ruling the region with autonomy and expanding his territory.

Gongsun Du ruled Liaodong as a de facto independent state, ignoring central Han authority. He maintained stability, promoted agriculture, and attracted refugees from the chaos of central China, creating a prosperous enclave.

Gongsun Du launched military campaigns into the Korean peninsula, conquering territories including the Lelang and Xuantu commanderies. This expansion extended Chinese influence into Korea and established Liaodong as a regional power.

Gongsun Du died in 204, and his son Gongsun Kang inherited his position. The Gongsun family continued to rule Liaodong independently for decades, maintaining autonomy from the Three Kingdoms.