The League of Corinth was a federation of Greek city-states established in 337 BCE by Philip II of Macedon. Its primary purpose was to unite the Greek states under Macedonian leadership, promoting peace and cooperation among them. The league aimed to facilitate military campaigns against Persia and to maintain stability in the region. The league included major city-states like Athens, Thebes, and Corinth, each contributing troops and resources. After Philip's assassination in 336 BCE, his son, Alexander the Great, continued to use the league as a platform for his military conquests, further expanding Macedonian influence across the known world.