What was the most important factor in the success of Philip II of Macedon in Greece?

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Quizplus · Accepted Answer

The internecine warfare among the Greeks weakened their ability to resist Philip II's advances and allowed him to conquer many city-states. His military technology was not significantly superior to that of the Greeks, and neither Athens nor Sparta betrayed the Greeks to Philip II. While Philip II did receive some financial support from the Persians, it was not a decisive factor in his success.

What Was the Most Important Factor in the Success of Philip