He did not become king of the Greeks, he was Hegemon (Leader). He could claim kingship of the Persian Empire when Persian emperor Darius was killed in 331 BCE.
He was never king of the Greeks - he called himself Hegemon = Leader. He finished his campaign to conquer the Persian Empire in 324 BCE after his retreat from India.
when he defeat the king darius 3
Alexander the Great became king of the Greek kingdom of Macedonia in 336 BCE after the death of his father. He took over as Hegemon of a united Greece when his father was assassinated. He became king of the Persians in 327 BCE.
Alexander the great king Phillip the II
His dad died.
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King Philip II of Macedonia. He was assassinated on the eve of his departure for Asia, and the conquest was carried out by his son Alexander.
Alexander the Great was the king of Macedon in 300 BC. What caused Alexander the Great to become a pharaoh is that he claimed land over two hundred years ago.
Alexander III, became king of the ancient Greek kingdom of Macedonia when his father Philip II was assassinated in 336 BC.
When Alexander was alive he was the sole leader and king (greeks never used the title emperor). After the death of Alexander his empire was divided to his generals (mainly : Seleukos, Antigonos,Ptolemaios,Kassandros,Lysimachos)
Alexander the Great, the son of King Phillip II. After King Phillip was murdered, Alexander was made king. He spread Hellenistic Culture (culture or customs of the Greeks) while he conquered other lands.
Despite his famous conquests that proclaimed him the Boy King, Alexander the Great succeeded the throne at the age of 20 on the death of his father Phillip of Macedonia.