The Mycenaeans and Minoans were similar in that they both produced great art. They also both inhabited the island of Crete but at different times. The Mycenaens defeated the Minoans.
The Minoan civilization existed on the island of Crete from about 3000 to 1100 BC. They were not Greek but influenced later Greek culture. Since the Minoans did not have walls to protect themselves, they were probably peaceful. Living on an island, they had a natural barrier to protect them against potential enemies. The Minoans had a form of writing that consisted of hieroglyphics. They produced a lot of art and had a rich culture. Part of Minoan civilization is thought to have been destroyed by a volcano before the Mycenaeans came.
The Mycenaeans were the first Greeks. They were most active from 1650 to 1200 BC. The Mycenaeans were a warlike civilization and fought often. The civilization had several different independent city-states, each with its own ruler. These city-states often fought one another. They built great walls around their cities. These walls increased in size toward the end of the Mycenaean period, possibly meaning they were threatened by other groups. The Mycenaean palaces were burned by the civilization that came after them.