Therefore enfranchising the uitlanders, at a time when the Crown was keen to consolidate its colonial hold in South Africa,[citation needed] risked creating a powerful fifth column that could ultimately lead to a power shift and the Transvaal passing into British hands, eventually turning it into a British colony.
This policy, together with high taxation,[citation needed] gave rise to considerable discontent.
Their treatment served as the pretext for the Jameson Raid in 1895; Cecil Rhodes planned an invasion of the Transvaal to coincide with an uprising of the uitlanders in Johannesburg.
From 1897 onwards, the High Commissioner for South Africa, Sir Alfred Milner, and the Colonial Secretary, Joseph Chamberlain, used the denial of rights to the uitlanders as their main point of attack against the Transvaal.
In the end, British insistence and Kruger's intransigence led to the outbreak of the Second Boer War in 1899.