So rapidly did this process go on that the little Republic to the "North of the Vaal River" had at the time of the Annexation grown into a country of the size of France. Its boundaries had only been clearly defined where they abutted on neighbouring White Communities, or on the territories of great native powers, on which the Government had not dared to infringe to any marked degree, such as those of Lo Bengula's people in the north. But wheresoever on the State's borders there had been no white Power to limit its advances, or where the native tribes had found themselves too isolated or too weak to resist aggressions, there the Republic had by degrees encroached, and extended the shadow, if not the substance, of its authority. The Transvaal has a boundary line of over 1600 miles in circumference, and of this a large portion is disputed by different native tribes. Speaking generally, the territory lies between the 22° and 28° of South Latitude and the 25° and 32° of East Longitude, or between the Orange Free State, Natal and Griqualand West on the south, and the Limpopo River on the north; and between the Lebombo mountains on the east, and the Kalihari desert on the west. On the north of its territory live three great tribes--the Makalaka, the Matabele, (descendants of the Zulus who deserted Chaka under Mosilikatze), and the Matyana. These tribes are all warlike. On the west, following the line down to the Diamond Field territory, are the Sicheli, the Bangoaketsi, the Baralong, and the Koranna tribes. Passing round by Griqualand West, the Free State, and Natal, we reach Zululand on the south-east corner; then come the Lebombo mountains on the east, separating the Transvaal from Amatonga land, and from the so-called Portuguese possessions, which are entirely in the hands of native tribes, most of them subject to the great Zulu chief, Umzeila, who has his stronghold in the north-east. It will be observed that the country is almost surrounded by native tribes. Besides these there are about one million native inhabitants living within its borders. In one district alone, Zoutpansberg, it is computed that there are 364,250 natives, as compared to about 750 whites.