Egypt was invaded during the reigns of Pharaohs Merneptah and Ramses III by a mysterious group of people known as the Sea People who may or may not have been involved in the Trojan War. Find out what we do know about the Sea People:
Who Were the Sea People
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KL47, who explains what we do know about the Sea People, concludes

"Both sides in the Trojan War may be represented among the Sea Peoples, but the impossibility of obtaining precise dates for the fall of Troy and the raids of the Sea Peoples makes it difficult to work out exactly how they are connected."