The founders – variously named Trekboers, Boers, and Voortrekkers – settled mainly in the middle, northern, north-eastern and eastern parts of present-day South Africa.
The republics came to an end after the Second Boer War of 1899–1902, which resulted in British annexation and later (in 1910) incorporation of their lands into the Union of South Africa.
Britain abolished slavery in 1834 and allocated the sum of 1,200,000 British pounds as recompense for the Dutch settlers' slaves.
The Dutch settlers disputed the requirement that they had to lodge their claims in Britain and objected that the value of the slaves was many times the allocated amount.
[2]: 199 Boer migrants were referred to as the Voortrekkers during the time of the Great Trek, several mass movements which occurred during the 1830s–40s.
[5] By 1795 the dissatisfaction towards the Dutch East India Company caused the burghers of Swellendam to revolt, and on 17 June 1795 they declared themselves a Republic.
[7] Louis Tregardt and Jan van Rensburg split off from Hendrik Potgieter's group, and continued on to establish Zoutpansberg.
[2]: 222 The establishment of the South African Republic had its origins in 1837 when the commandos of Potgieter and Piet Uys defeated a Matabele raiding party of Mzilikazi and drove them back over the Limpopo river.
The Volksraad from Winburg was transferred to Potchefstroom and the South African Republic (Dutch: Zuid-Afrikaansche Republiek; the ZAR) was established as the name of the new country.
[2]: 231 The Boer Republics were predominately Calvinist Protestant due to their Dutch heritage, and this played a significant role in their culture.
The Natalia Republic was established in 1839 by the local Boers after Pretorius entered into an alliance with Mpande, the new Zulu king.
In June 1852 a public meeting was held in Bloemfontein where all the European people voted on a resolution whether to pursue independence or remain under British rule.
[2]: 233 The State of Goosen was founded by a group of Boer Mercenaries led by Nicolaas Claudius Gey van Pittius in November 1882.
[11] West of the Transvaal 400 Boers allied with David Massouw, leader of the Koranna Khoisan tribe, when they invaded and took a piece of land, which they declared the Republic of Stellaland.
The Boers were promised and granted land for their services and were led by Louis Botha who would go on to prominence during the second Anglo-Boer War.
States were also established by other population groups, most notably the Griqua, a subgroup of South Africa's heterogeneous and multiracial Coloured people.
In this war, the Transvaal and Orange Free State were defeated and annexed by the overwhelmingly larger British forces, ceasing to exist on 31 May 1902, with the signing of the Treaty of Vereeniging.