Who was the son of Philip of Macedon and created the largest empire by age 33?

The son of Philip of Macedon who created the largest empire by the age of 33 is Alexander the Great. Philip II was the king of Macedon and laid the groundwork for the expansion of his kingdom, but it was Alexander who took charge after Philip's assassination.

By conducting a series of military campaigns, Alexander expanded his empire vastly, stretching all the way from Greece through Asia Minor, Egypt, Persia, and into parts of India. His conquests were remarkable not only for their size but also for their speed and effectiveness. He is known for his military genius, innovative tactics, and the ability to inspire his troops, which enabled him to create one of the largest empires in history by the time of his untimely death in his early thirties.

This vast empire also facilitated cultural diffusion, blending Greek culture with those of the various regions he conquered, which had lasting impacts on the subsequent history of the areas involved. Recognizing Alexander's accomplishments is crucial for understanding the Hellenistic period and its significance in Western civilization.