Cyrus took his nomadic warriors and conquered most of Mesopotamia, including the Babylonians, ending the sad period in Jewish history known as The Babylonian Exile.
The Persian Empire was ruled with a light touch, allowing conquered kingdoms to keep their kings and elites as long as they pledged allegiance to the Persian King and paid taxes, which is why the Persian king was known as The King of Kings.
The Peloponnesian War weakened the Greek city-states so much that Alexander “Coming Soon” the Great’s father was able to conquer all of them, and there were a bunch of bloody wars with the Persians and all kinds of horrible things, and Greece wouldn’t glimpse democracy again for two millennia.
Socrates gave us his interrogative Method; Sophocles gave us Oedipus; but the legacy of Ancient Greece is profoundly ambiguous, all the more so because the final winner of the Peloponnesian War were the dictatorial Spartans.
The Persian wars set off the cultural flourishing that gave us the Classical Age and if the Persians had won, their monarchy might have strangled democracy in its crib and given us more one-man rule.
The Greeks gave the west our first dedicated history, our vocabulary for talking about politics, and our idealization of democracy, which comes from the government they had in Athens.
The high point of Greek culture is exemplified by the Parthenon and the plays of Aeschylus, which is Athens in the fourth century BCE, right after the Persian Wars.
Aristophanes is responsible for the conversation "Praxagora: I want all to have a share of everything and everything to be in common; there will no longer be either rich or poor; [...].
Greek poets, mathematicians, playwrights, architects, and philosophers founded a culture that is still identified with them and introduced many ideas, from democracy to fart jokes.
Between 490 and 480 BCE, the Persians made war on the Greek City states, including the battle of Thermopylae where three hundred brave Spartans battled five million Persians.
Aristophanes frequently used actual crap to make jokes, such as in The Acharnians where the chorus imagines a character in his play throwing crap at a real poet he didn't like.
Pericles’s funeral oration, bragging about the golden democracy of Athens with rhetoric that wouldn’t sound out of place today, is from a later war, The Peloponnesian War, a thirty year conflict between the Athenians and the Spartans.