Wrong. The battles Versus Troy(first time), the Persian wars(Both times Athens led the coalition), then finally, Alexander.
He spread Hellenic culture globally, but Greece had united several times before him. He just happened to make a nation and an empire that lasted and was Greek centered. Also, remember that back then, "Greek" learning, etc, was a high mark and very wanted because of the "non-barbarian" status it gave off as well.
Sorry buddy, but as a Greek, allow me to know Greek history a bit better, yes there were indeed some coalitions before Alexander, but not as big as his, he managed to unite 95% of all Greeks under his banner *except the pussy Spartans*.
Regarding the Greco-Persian war, the coalition consisted of
Athens
Sparta
Thespiae
Thebes
and some random Greek forces from Cyprus and minor Asia
Yes, those 4 are the most known city states in Ancient Greece, but there were others who were equally strong, but history tends to be injust with them.
Let me quote you something from Wikipedia
Hellenic alliance
In 481 BC, Xerxes sent ambassadors to city states throughout Greece, asking for food, land, and water as tokens of their submission to Persia. However, Xerxes' ambassadors deliberately avoided Athens and Sparta, hoping thereby that those states would not learn of the Persians' plans.[114] States that were opposed to Persia thus began to coalesce around these two city states. A congress of states met at Corinth in late autumn of 481 BC, and a traitor alliance of Greek city-states was formed.[115] This confederation had powers both to send envoys to ask for assistance and to dispatch troops from the member states to defensive points after joint consultation. Herodotus does not formulate an abstract name for the union but simply calls them "οἱ Ἕλληνες" (the Greeks) and "the Greeks who had sworn alliance" (Godley translation) or "the Greeks who had banded themselves together" (Rawlinson translation).[116] From now on, they will be referred to as the 'Allies'. Sparta and Athens had a leading role in the congress but the interests of all the states influenced defensive strategy.[117] Little is known about the internal workings of the congress or the discussions during its meetings. Only 70 of the nearly 700 Greek city-states sent representatives. Nevertheless, this was remarkable for the disjointed Greek world, especially since many of the city-states present were still technically at war with one another.[118]
and here is the Source for those who want to educate themselves even more
http://en.wikipedia.org/wiki/Greco-Persian_Wars#Hellenic_allianceSame happened to Trojan war, yes, there were many Greek city states, attacking Troy as one nation/force, but they werent the majority.
Alexander managed to unite all Hellenes, from Byzantion to Crete, and from Minor Asia to Cyprus
