Ten.
11
He spent tow years re-establishing control of Greece, then 10 years taking over the Persian Empire.
Alexander's campaign to take the Persian Empire lasted a decade - 334-324 BCE.
Alexander's campaign to take the Persian Empire lasted a decade - 334-324 BCE.
The war was Alexander's invasion of the Persian Empire, lasting 10 years in which time he won many battles.
Alexander was born in 356 and the last of Greece came under Roman control in about 146. So about 210 years.
History
3,000.
In the Persian Empire - he fought decisive battles in Asia Minor (Granicus), Syria (Issus), Mesopotamia (Gaugamela) as well as many others throughout the empire as far as the Indus River in the east, over a period of ten years.
The only Greek Empire was the one created by Alexander the Great. It was not a successful empire, as it did not survive his death.
For how many years constantinople the capital of a united roman empire ?
150 years