The Mycenaeans were the head of the Greek Empire after the Minoans. From 1900 bc to 1100 bc, this is the time period of the Odysseus and the Trojan War. The dead were buried in mounds with necessary items for the afterlife similarly to the Ancient Egyptians, Chinese and other ancient people. When this golden mask for a dead king was found, it was originally believed to have belonged to King Agamemnon. It was later proved to have come from a time period even before, but is still referred to as the Mask of Agamemnon.
Mycenaeans: The Civilization of Heros - This 24 minute video explains the history, important cities and artifacts of the Mycenaeans.