Antigonid Macedonia was a Hellenistic kingdom that emerged after the death of Alexander the Great in 323 BCE. It was founded by Antigonus I Monophthalmus, one of Alexander's generals, who sought to control the vast territories of the Macedonian Empire. The kingdom was centered in Macedonia, a region in northern Greece, and played a significant role in the power struggles of the Hellenistic world. The Antigonid dynasty lasted until 168 BCE, marked by conflicts with rival kingdoms such as the Seleucid Empire and the Ptolemaic Kingdom. The kingdom is known for its military strength and cultural contributions, including advancements in art and philosophy. Ultimately, it fell to the expanding power of the Roman Republic.