sentences:  In 1879, Zululand came under British control.Then in 1886, an Australian prospector discovered gold in the Witwatersrand, accelerating the federation process and dealing the Boers yet another blow.Johannesburg's population exploded to about 100,000 by the mid-1890s, and the ZAR suddenly found itself hosting thousands of "uitlanders", both black and white, with the Boers squeezed to the sidelines.