Who conquered the Greek city-states?

Answer 1

The Dorians conquered the Mycenaens because they had iron weapons and their swords were stronger. When the Dorians conquered the Myceaneans the Dark ages began.

Answer 2

Phillip the second, who was 23 and was king of Macedonia.

Answer 3

The Mycenaean's civilization were overthrown by the Dorians because they had irons weapons while the Mycenaeans used bronze weapons for battle.