Once European negotiators had agreed upon the borders of the French Congo, France had to decide how to pay for the costly occupation, administration, and development of the territory it had acquired. The reported financial successes of Leopold II's concessionary companies in the Congo Free State convinced the French government to grant 17 private companies large concessions in the Ubangi-Shari region in 1899. In return for the right to exploit these lands by buying local products and selling European goods, the companies promised to pay rent to France and to promote the development of their concessions. The companies employed European and African agents who frequently used brutal methods to force the natives to labor.