His persistence in running a 10 year military campaign to take over all the Persian Empire.
He created alliances with many greek city-states
Cleopatra was the last Pharaoh of Egypt who helped expand and build the Egyptian empire. She managed to seduce two Roman leaders and influence their important decisions and lives.
The surplus male population of the Greek world anxious for employment, which provided Alexander withe the superior armoured infantry capable of defeating the more numerourous but unarmoured Persian infantry.
the road system helped the incas govern their vast empire
The Persian Empire stretched from Asia Minor to India, and included many conquered nations. A strong army was important to maintaining the Persian Empire's power for many reasons. Firstly, the army helped to conquer to new lands for the empire. Secondly, they helped deter any possible uprisings or revolutions among the conquered nations. Thirdly, they helped maintain the peace throughout the empire.
Alexander the Great helped expand Hellenism to the East.
Alexander helped the survival of his empire
Chandragupta Maurya
The Byzantine and Persian empires were weak.
it expanded by the leaders (caliphate helped by expanding the empire
Macedonian.
It's superior military and strategic tenacity.
Alexander the great helped the Greeks take out the Persians
he helped the empire expand more and he discovered new places such as the east coast of Australia
An eye for and eye
well i guess tradeTrade
Disunity among the Indian kings was the basic cause for Alexander's success.