The Natalia Republic was a short-lived Boer republic founded in 1839 after a Voortrekker victory against the Zulus at the Battle of Blood River. The area was previously named Natália by Portuguese sailors, due to its discovery on Christmas. The republic came to an end in 1843 when British forces annexed it to form the Colony of Natal. After the British annexation of the Natalia Republic, most local Voortrekkers trekked northwest into Transorangia, later known as the Orange Free State, and the South African Republic.

The Great Trek was a northward migration of Dutch-speaking settlers who travelled by wagon trains from the Cape Colony into the interior of modern South Africa from 1836 onwards, seeking to live beyond the Cape's British colonial administration. The Great Trek resulted from the culmination of tensions between rural descendants of the Cape's original European settlers, known collectively as Boers, and the British Empire. It was also reflective of an increasingly common trend among individual Boer communities to pursue an isolationist and semi-nomadic lifestyle away from the developing administrative complexities in Cape Town. Boers who took part in the Great Trek identified themselves as voortrekkers, meaning "pioneers", "pathfinders" in Dutch and Afrikaans.