British pressures on the Dutch-speaking population of the South African Republic became intense in the aftermath of industrialization. In seizing the diamond fields in 1870, the British had swept aside many Boer land claims. In 1877, fearing a collapse of the South African Republic in the face of defeat by a Pedi army, the British had formally annexed the Boer state, as the Transvaal. They then set about destroying the Pedi to obtain laborers for the Kimberley mines, and they completed the task in 1879. In 1880, however, the Transvaalers rose, and at the Battle of Majuba Hill in 1881, they defeated a British army. The British then withdrew, leaving the Boers victorious in what they would later call their First War of Independence.

The discovery of gold on the Witwatersrand greatly increased Boer-British tensions. Here was vast mineral wealth beyond British control. Moreover, the president of the South African Republic, Paul Kruger, attempted to lessen his state's long-term dependence on Cape merchants by developing a rail link to Portuguese East Africa. Such a link threatened British commercial interests and revived old fears of the Boers' gaining direct access to the sea and thus to other European powers. At the same time, the mine owners were, without exception, English speakers who exhibited no loyalty to the South African Republic and who did not seek to reinvest their gold profits in the local community. Indeed, they complained bitterly about all attempts to tax the gold industry.

These economic tensions lay at the base of a political issue: the right of English speakers to have the vote. With the rise of the gold industry and the growth of Johannesburg, the South African Republic had been inundated by so many English-speaking immigrants (called uitlanders by the Boers), most of them skilled mine workers, that by the 1890s they constituted a majority of the white male population. The state's constitution limited the vote to males who had lived in the South African Republic for at least seven years, and Kruger feared that expanding the franchise would only enable mine owners to manipulate their workers and to thereby win political power. British mine owners and officials constantly decried Kruger's refusal to extend the franchise. In December 1895, Cecil Rhodes took matters a step further by sending 500 armed men, employees of his British South Africa Company, into the South African Republic under the leadership of Dr. Leander Starr Jameson. Rhodes hoped that the uitlanders would rise and join the invaders to help overthrow Kruger's government. The invasion, however, was a fiasco: Boer commandos disarmed Jameson and his men with little resistance, and the uitlanders took no action. Rhodes resigned the premiership of the Cape Colony in disgrace. The British government denied having advance knowledge of the invasion and claimed that it had no expansionist plans of its own.

Distrusting the mine owners and the British government, Kruger sought to build his country's strength. He engaged in diplomatic relations with Germany, imported arms from Europe, and continued to deny the vote to uitlanders . He also cemented relations with the Orange Free State and sought support from Dutch speakers in the Cape. In these endeavors, he was assisted by a growing sense of Afrikaner identity that had developed in the last quarter of the nineteenth century. This nationalistic identity had emerged clearly in the early 1880s, after the victory of Majuba Hill, when S.J. du Toit, a Dutch Reformed minister in the Cape, had published a newspaper, Die Afrikaanse Patriot (The Afrikaner Patriot), and a book, Die Geskiedenis van ons Land in die Taal van ons Volk (The History of our Land in the Language of our People), which argued that Afrikaners were a distinct people with their own fatherland in South Africa and that they were fulfilling a special mission determined expressly by God. Du Toit had gone on to found a political party in the Cape, the Afrikanerbond, to represent the interests of Dutch speakers. The Jameson Raid and anti-Boer sentiments expressed by gold magnates and British officials further cemented an Afrikaner sense of distinctiveness, which in the 1890s reached across political boundaries to include Dutch speakers in the Cape and the citizens of the Orange Free State as well as the Transvaalers.

Rhodes, together with his fellow gold mining magnates and the British government (in the persons of Joseph Chamberlain, secretary of state for the colonies, and Alfred Milner, high commissioner in South Africa), continued to denounce Kruger and his government. Rhodes and his peers called attention to what they considered rampant official corruption while also complaining that taxes were too high and that black labor was too expensive (because of perceived favoritism by the government regarding the labor needs of Afrikaner farmers). Chamberlain had concluded by the second half of the 1890s that the British needed to take direct action to contain Afrikaner power, and he had at first used diplomatic channels to pressure Kruger, although with little success. Milner pointed out what he considered the appalling condition of British subjects in the South African Republic, where, without the vote, they were, he argued, "kept permanently in the position of helots." In 1899 Milner advised Chamberlain that he considered the case for British intervention "overwhelming." Ignoring attempts by Kruger to reach a compromise, Chamberlain in September 1899 issued an ultimatum requiring that Kruger enfranchise British residents of the South African Republic. At the same time, Chamberlain sent troop reinforcements from Britain to the Cape. Kruger, certain that the British were bent on war, took the initiative and, allied with the Orange Free State, declared war on the British in October 1899.

Data as of May 1996