The Boers then resorted to cajolery, and at a meeting held in August 1870, at which President Pretorius and Paul Kruger represented the Transvaal, invited the Barolong to join their territories with that of the republic, in order to save them from becoming British.
Pretorius (q.v.) had been appointed his successor, and to the younger Pretorius was due the first efforts to end the discord and confusion which prevailed among the burghers - a discord heightened by ecclesiastical strife, the points at issue being questions not of faith but of church government.
The Sand River Convention of 1852 had not defined the western border of the state, and the discovery of gold at Tati to the northwest, together with the discovery of diamonds on the Vaal in 1867, offered Pretorius every inducement to extend his boundary.
When Pretorius conducted the negotiations which led to the signing of the Sand River Convention he did so without consulting the volksraad, and Potgieter's party accused him of usurping power and aiming at domination over the whole country.
The Boers, cut off from their port, called out a commando of some 300 to 400 men under Andries Pretorius and gathered at Congella at the head of the bay.
The eastern extension claimed by Pretorius was the sequel to endeavours made shortly before, on the initiative of a Scotsman, to develop trade along the rivers leading to Delagoa Bay.
Wearied like Mr Boshof of a thankless task, and more interested in affairs in the Transvaal than in those of the Free State, Pretorius resigned the presidency in 1863, and after an interval of seven months Mr (afterwards Sir) John Henry Brand, an advocate at the Cape bar, was elected president.
When the British government decided to recognize the independence of the Transvaal Boers it was with Pretorius that negotiations were conducted.
The immediate followers of Pretorius now became extremely incensed at the action of the Lydenburg party, and a mass meeting was held at Potchefstroom (October 1860), where it was resolved that: (a) the volksraad no longer enjoyed its confidence; (b) that Pretorius should remain president of the South African Republic, and have a year's leave of absence to bring about union with the Free State; (c) that Schoeman should act as president during the absence of Pretorius; (d) that before the return of Pretorius to resume his duties a new volksraad should be elected.
Peaceful overtures having failed, Pretorius and Paul Kruger placed themselves at the head of a commando which crossed the Vaal with the object of enforcing union, but the Free State compelled their withof drawal (see Orange Free State).