Who were the people that started the Dark Age In Greece?

The Dark Age in Greece, which lasted from around 1100 to 800 BCE, is often attributed to the invasions and migrations of the Dorian Greeks. These Dorians, along with other tribes, displaced the Mycenaean civilization, leading to a significant decline in cultural and economic activity. This period was characterized by a loss of writing, trade, and urban life, marking a stark contrast to the preceding Mycenaean era. The causes of the Dark Age are still debated, but factors include invasions, internal strife, and natural disasters.