It is unclear what you mean by "perisain army." If you are referring to the Persian army, then the Greeks, particularly the city-states of Athens and Sparta, joined forces to defeat the Persians in the Greco-Persian Wars. The exact composition of the allied forces varied depending on the specific battles, but the Greeks were successful in repelling the Persian invasions.
They were the largest, but couldn't control all their land.
King Cyrus the Great.
Cyrus the Great, then his son Cambyses, then Darius.
Alexander's soldiers on horseback, cavalry, were a strong force. They crushed the local Persian forces, leading to the final downfall of the Persian Empire.
Alexander the Great defeated the Persian empire
The Persians would have won if Sparta and Athens had not united to fight the Persian Army
The strong army that Alexander defeated was the Persian Army
Being outmanoeuvred by Alexander the Great - who first slaughtered Greeks who were bolstering up the Persian army, then putting an end to the Persian fleet by occupying their bases in the Mediterranean, then capturing the Persian treasury which enabled him to pay his army, and inflicting a final land defeat of the Persian army.
yes
Who is 'you do'.
The Persian army and a much smaller army made up of combined forces from the city-states of Greece.
The small Greek force at Thermopylae was defeated by the Persian army in 480 BCE.
After defeating the Greek navies at Artemesium, the Persian army moved to Athens and occupied it.
The Persian army, and the armies of the Greek city-states.
The Persian army, and the armies of the Greek city-states.
479 BCE.