Ancient Greece was a very mountainous area so the people mainly used the sea as a way of feeding themselves and earning money. Mountains cover about 80 percent of the land.
The country had little natural fresh water with only a few small rivers running through it, so it was not suitable land for intensive agriculture. The population of Ancient Greece became a seafaring nation who spent a lot of time in their boats, fishing, trading and colonizing the many small islands off the coast of the mainland. The country was rocky, so they traded many tons of stone for construction and statues.