Greece's mountainous terrain and location along the sea shaped early Greek civilization. Farmers in mountainous areas grew crops and raised livestock, while coastal communities became fishermen, sailors, and traders who exchanged goods. The Minoans, based on the island of Crete, built large palaces and cities between 3000-1550 BC and became skilled seafaring traders, exchanging goods around the Mediterranean. They developed a writing system. The Mycenaeans then invaded Crete around 1450 BC and controlled the region until 1100 BC, adopting Minoan customs. Ancient stories like the Iliad and Odyssey told of the Mycenaeans and their involvement in the Trojan War.