Population movement.
Mycenaean empire was invaded by three groups of people including people from the north, Dorians and the Sea People. The effect of the invasion of the Dorians remained under question as it is claimed by some scholars that they only took advantage to occupy the larger region of the Mycenae after the Mycenaeans had been weakened rather than giving an on front attack to a strong standing Mycenaean empire. The Dorians not only attacked Mycenae but also occupies Aegean Sea and Ionia islands .
The Sea People whose main aim was to acquire new lands for settlement performed the most massive attacks displacing populations, destroying settlements and bringing down buildings and other structures. A big population was displaced to the other side of the Mediterranean Sea in a bid to keep off from the raids from the Sea People. They brought down Pylos via a sea attack before they embarked on Egypt where they performed a series of attacks between circa 1301 and 1600 BC.
They were also responsible for the invasion of Levant and Anatolia.The attack by the Sea People saw a success and prosperity mainly because it came at the time of the invention of the Iron Age period. .
Iron metal was a better metal than bronze in the manufacture of weapons because they were strong, durable and efficient besides being cheap hence easily affordable. The armaments made from iron proved more superior to their bronze counterparts. The attackers made their attacks in such a way that they did not leave behind any elements of their weapons may be for reasons that such weapons could be used to track them down.
The people from the north targeted the administrative building of the empire and they managed to bring down the palaces of Thebes and Iolcos before extending their attacks to Isthmus of Corinth. In order to ensure maximum operation, the northern people also attacked and destroyed Tiryns and Mycenae. By the end of the 12th century, all the cities of the Mycenae had been ruined and the neighboring villages and towns in the region abandoned and evacuated .
