what country had trading colonies in the mediterranean
italy
Athens was the most active in establishing colonies. The reason was a) that Athens was a trading nation, and it helped having your own people established in places you wanted to trade with. Moreover, its trading and seafaring tradition made it relatively easy to convince people to go and settle elsewhere. And b) Athens had the problem that its mountainous and thickly forested hinterland offered too little space to house and feed a growing population. That made the decision to try your luck elsewhere in a colony with yours kinsmen and in a familiar cultural setting and with regular contact with people from the 'motherland' much easier.
The Phoenicians had limited land and a growing population. They were faced with the choice of either conquering more land or trading. They elected the trade option and established a profitable trading network around the Mediterranean.
The colonies, established around the Mediterranean and Black Seas, were independent city-states and each had to make it own living, They traded with their mother cities, and locally.
The Islands provided additional land and sea produce in an increasingly overpopulated mainland, added to the number of city-states, and became stepping stones to mainland sites for more colonies around the Mediterranean and Black Seas..
GREECE
Greece<-----
They were trading colonies as bases for their trading activity around the Mediterranean.
They were trading stations spread around the central and western Mediterranean Sea.
In most of the world - just around the Mediterranean.
they wanted to make trading post
Their purpose was to be trading ports around the Mediterranean.
Phoenicians
They established trading stations rather than colonies, to promote their carry-trade activity.
Phoenicians
Trading posts from which they ran ships to carry good between the centres, from which trade they made a handsome profit.
It was a trading empire in the Western Mediterranean.