The most popular ones are:
Persian invasion 490 BCE.
Persian invasion 480-479 BCE.
Peloponnesian War 431-404 BCE.
There were a dozen or so others. Check out First Peloponnesian War, Samian War, Thebes and a host of others.
Athenians main rivals where from Sparta. They fought in the Peloponnesian wars.
Athenians main rivals where from Sparta. They fought in the Peloponnesian wars.
The Athenians , only because they came to grief during the Peloponnesian Wars by overestimating their powers to overwhelm Sparta .
Greco-Persian Wars .
they fought the Persian wars,which lasted 27 year and the pelonolnesian war
That is impossible to answer, as there have only been two world wars.
Coleman Kcaj's fate is still unknown
Space Wars happened in 1977.
Yavapai Wars happened in 1861.
In 432 bce The Peloponnesian League declared the Athenians to have broken the peace .
Athenians main rivals where from Sparta. They fought in the Peloponnesian wars.
The Persian Wars lasted from 499-448 BC. The Pelopenesian Wars lasted from 431-404 BC So the answer is: The Persian Wars happened first.