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How did Philip II of Macedon gain influence over the Greek city-states?

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The Parthenon stands atop the Acropolis hill in Athens, Greece, surrounded by ancient stone walls and ruins, with city buildings and a distant hill in the background. — ancient Greek civilization The Acropolis, Athens.

Philip II of Macedon employed a multifaceted strategy to gain influence over the Greek city-states, combining military prowess, diplomatic maneuvering, and political institutionalization.

Military and Diplomatic Expansion

Philip initially expanded his influence by intervening in regional conflicts, most notably the Third Sacred War. By ending this conflict, he secured membership in the Delphic Amphictyony, an association of states that granted him significant political and diplomatic leverage. His victory at the Battle of the Crocus Field allowed him to take control of Thessaly, binding the region to Macedonia for over a century.12

Political Strategy

Philip often penetrated Greece without war by cultivating allies among local politicians, providing subsidies, or using mercenary forces to influence local affairs. Following his decisive victory over Thebes and Athens at the Battle of Chaeronea in 338 BCE, he established the League of Corinth. This organization allowed him to act as hēgemōn (leader), mandating that member states provide military support for a unified campaign against Persia. By positioning himself as the guarantor of a general peace, Philip effectively integrated the Greek city-states into a Macedonian-led hegemony.1342