WORLD HISTORY

Detailed explanation-1: -The Dorian invasion, circa 1100 BCE, is the most likely cause of the destruction of the Mycenaean civilization and may have happened because the Dorians either desired more land that could prove valuable for agriculture or because of a Greek legend connected to the Greek god Hercules.

Detailed explanation-2: -The Dorians swept away the last of the declining Mycenaean and Minoan civilizations of southern Greece and plunged the region into a dark age out of which the Greek city-states began to emerge almost three centuries later.

Detailed explanation-3: -First, about 1100 bce the Dorian invasions brought speakers of West Greek southward, then into the Peloponnese, and finally into the Aegean. Some pre-Dorian Greek populations were expelled from their homes and emigrated eastward to the west coast of Anatolia and to Cyprus.

Detailed explanation-4: -Ancient Greek civilization flourished from the period following Mycenaean civilization, which ended about 1200 BCE, to the death of Alexander the Great, in 323 BCE.