What were the features of the places where the Greeks founded colonies?

The Greeks founded colonies, first of all, in the immediate vicinity of the sea, in order to most conveniently trade and import slaves here. The area must be suitable for agriculture, in particular wine and livestock production. Also, climatic conditions were an important factor in the formation of the colony. They were supposed to be similar to the metropolis. Also an important factor was the location of the colony at the intersection of transport and trade routes. The Greeks built colonies away from potential enemies.