History of Atlantis and the Lost Tribes

When people talk about Atlantis, they are usually referring to the writings of Plato, the Athenian philosopher who lived during the Classical period in Ancient Greece. According to Plato, massive cataclysms ended a powerful civilization 11,500 years ago , which incidentally is the same date anthropologists recognize as the end of the Pleistocene and start of our current Holocene age.
Global sea levels were 400 feet lower during the late Pleistocene, or Ice Age, when Atlantis was said to have existed in the Atlantic Ocean. The glaciers melted in several spurts, with a major cataclysm taking place around 9500 BC, the date given by Plato for the destruction of Atlantis, which perfectly matches the geological record.
The Lost Tribes were the ten of the Twelve Tribes that were said to have been deported from the Kingdom of Israel after its conquest by the Neo-Assyrian Empire circa 722 BC.
Claims of descent from the "lost" tribes have been proposed in relation to many groups. The historian Josephus wrote that "the ten tribes are beyond the Euphrates till now, and are an immense multitude and not to be estimated in numbers".