Libya-Egypt, Asia Minor, Syria-Palestine, Mesopotamia, Thrace-Macedonia, Media-Persia, Central Asia, Western India.
A couple of hundred Greek city-states in the eastern Mediterranean, and the Persian empire's western province of Asia Minor.
Attempting to organise security and prosperity within the empire.
The countries absorbed by Persia included Media, the Babylonian Empire, the remnant of the Assyrian Empire, the Lydian Empire and other peoples in Asia Minor, Thrace, Syria, Parthia, the peoples of Central Asia, Egypt, Libya.
The Persian empire was gone before the Roman empire became powerful.
The Empire was formed by Cyrus the Great in around 550 BCE.
Numerous historic states and many modern countries became part of the Persian Empire, including: Iran, western Afghanistan, western Pakistan, Kuwait, Iraq, northern Saudi Arabia, Jordan, Israel/Palestine, eastern Egypt, Syria, Turkey, and northern Greece.Persia was incredibly religiously diverse with innumerable pagan cults (such as those of Egypt, Lydia, Mesopotamia, and Phoenicia), an official religion of Zoroastrianism, and Judaism.
He didn't defend them, he defeated them, and after he became assumed the throne of the Persian Empire he incorporated them into his own army.
Libya-Egypt, through the Middle East, to Central Asia and today's Pakistan.Libya-Egypt, the Middle East, Central Asia and today's Pakistan region.
Alexander the Great.
It essentially became a standoff - after the Greeks repelled the Persian attempt to incorporate them into the Persian empire, a peace was arranged and the Greeks went back to fighting each other. The Persian empire continued on until over-run by Macedonia.
He became king in 336 BCE and over the next ten years conquered the Persian Empire, turning it into an empire of his own.
First, it was brought within the Persian Empire. It was then taken over by Alexander the Great when he captured the Persian Empire. It then became part of the kingdom set up by Alexander's general Seleucis, and then was taken into the Roman Empire.