Final answer:
The Minoan culture relied on the Ocean as their defense barrier due to their island setting.
Step-by-step explanation:
The Minoan culture relied on the Ocean as their defense barrier. Being an island civilization, the Minoans were protected by the sea that surrounded them, making it difficult for invaders to reach their cities and palaces. Unlike other ancient civilizations, the Minoans did not heavily fortify their palaces or cities, indicating that they were less concerned about foreign invasion due to their island setting.