The center of his Empire was Babylon.
the awnser is alexandria
Alexander the Great extended his empire by conquering the Persian Empire and turning it into an empire of his own.
Alexander conquered the Persian Empire.
The Macedonian Greek Empire of Alexander the Great conquered the Persian Empire and incorporated all of its lands.
Persian Empire
Alexander the Great's conquest of the Persian Empire created an empire reaching from Egypt to India.
Alexander as king.
Alexander the Great defeated the Persian empire
The Persian Empire.
The Macedonian Empire.
Persian Empire
The death of Alexander the Great caused his unified empire to be split three ways under his top generals. This caused a great deal of unrest in what was Alexander's empire.