Who were the Falasha and how did they preserve their culture?

Jewish Ethiopians. The Falasha call themselves House of Israel and claim descent from Menilek I, son of King Solomon and the Queen of Sheba. Probably descended from local Agew peoples converted by Jews in southern Arabia, they remained faithful to Judaism after the Ethiopian kingdom was converted to Christianity in the 4th century . Persecuted by Christians, they settled in the area around Lake Tana in northern Ethiopia. Though ignorant of the Talmud, members adhered strictly to the Mosaic law and observed some festivals of Judaism.