No. The Fertile Crescent was the first civilization. The civilizations of the Indus Valley, Egypt, and China all predated the Greeks.
The Greeks built the Parthenon on the Athenian Acropolis.
The Greeks built their Temple for themselves and their Gods.
Yes
The Greeks
For the Greek Gods
The Greeks built temples for the gods they worshiped.
The Greeks established colonies for trading with other city-states.
As a gift for Athena
by mading it
With hard work.
No, the Greeks were using bricks to build. It was the Romans that later on discovered the concrete.