The mass migration of the Boer farmers from Cape Colony to escape British domination in 1835-36 - the Great Trek - has always been a potent icon of Africaaner nationalism and identity. For African nationalists, the Mfecane - the vast movement of the Black populations in the interior following the emergence of a new Zulu kingdom as a major military force in the early 19th century - offers an equally powerful symbol of the making of a nation. With...