 By 1860, the forts built between Médine and St. Louis allowed Faidherbe to launch missions against the Trarza Moors in Waalo (north of the Senegal river), who had previously collected taxes on goods coming to Saint-Louis from the interior.Faidherbe also started the westernization of the area by developing banks, civil administration, and also established an accord with Senegal’s religion, Islam.Expansion continued under Governor Louis Brière de l'Isle from 1876 to 1881.