Invasion by an ambitious Alexander the great who took over the Empire and turned it into an empire of his own.
Persia lost the battles of Granicus, Issus and Gaugamela, which led to Alexander's takeover of the Persian Empire.
It's takeover by Alexander the great.
It's takeover by Alexander the Great.
Alexander the Great's 10 year military conquest was terminal.
The period of disorder after the decline of the Roman Empire led to an extended period of disunity during the Middle Ages that was characterized by feudalism.
Persia lost the battles of Granicus, Issus and Gaugamela, which led to Alexander's takeover of the Persian Empire.
It's takeover by Alexander the great.
It's takeover by Alexander the Great.
Alexander the Great's 10 year military conquest was terminal.
inflation and a growing population made it harder to maintain colonies.
The Persian Empire led by Cyrus.
Athens turned the Delian League which it had led against the Persian Empire into an empire of its own.
Athens turned the Delian League which it had led against the Persian Empire into an empire of its own.
Athens turned the Delian League which it had led against the Persian Empire into an empire of its own.
Athens converted the Delian League, which it had led against the Persian Empire, into an empire of its own.
The period of disorder after the decline of the Roman Empire led to an extended period of disunity during the Middle Ages that was characterized by feudalism.
The most important factor leading to Alexander the Great's eventual decline was the vastness of his empire, which led to overextension and difficulty in managing such a large territory. Additionally, the lack of a clear successor and infighting among his generals after his death contributed to the fragmentation of his empire.