The Greeks fought the Persians in the Greco-Persian Wars
Its called ''the Persian wars'' or the ''Greco-Persian wars''.
The war between the Greek city-states and the Persian Empire 499-449 BCE.
Which Greek wars? Did you mean the Peloponnesian War, which was fought by the city-states of Athens and Sparta(and their allies)? Athens lost that war. There was the Greco-Persian War, fought between some of the city-states of Greece and the Persian Empire. A stalemate was reached. These are two of the wars that Greece has participated in form or another.
The Persian invasion of mainland Greece 480-479 BCE.
The second greco-persian war
When was the 'First' Persian War.
Greco-Persian Wars happened in -449.
It was between an alliance of Greek city-states and the Persian Empire. Today we call it the Persian War to differentiate it from the wars between the Greek city-states. It is often called the Greco-Persian War.
Their loss in the Greco-Persian War as well as internal unrest within conquered lands.
It would only be a war if they fought, wouldn't it.
499-449 bc