Please lah. You get history from comic book is it? Actually it
was the Greeks who were uncomfortable with the rapid rise of Persia
under Darius I, so they instigated uprisings in Persian territories
to destabilize Persia and check its expansion. Darius I decided to
attack Greek territory to signal to the Greeks that he didn't like
what they were doing. Persia and Greece continued these back and
forth battles until the time of Alexander of Macedonia who managed
to conquer the Persian capital Thermopylae. To seek legitimacy he
married a Persian princess but soon after died, leaving the
Persians once more to do as they please. However, Persian expanded
ceased after that and eventually the Persian empire got absorbed
into the Arab Umayyad empire.
The Westerners always like to spin history and make themselves look
big and grand. Asians should get an education and not continue to
be mentally enslaved.