The mystery: Who were the lost 10 tribes?

The Ten Lost Tribes of Israel refers to the ancient Tribes of Israel that vanished from the Biblical account after the Kingdom of Israel was destroyed, enslaved and exiled by ancient Assyria in 722 BCE.

Many groups of Jews have doctrines concerning the continued hidden existence or future return of these mysterious tribes. This is a subject that is composed of 1/3rd history, 1/3rd religious tradition and 1/3rd speculation. There have been some strange claims about who may be descended from the lost tribes. For instance, Native Americans ( associated with the mormon religion) British, the Japanese The Kaifeng Jews in China and even The Pashtuns from Afghanistan ( some say) claim to be descended from one of the lost tribes.