During the first decade of French colonial rule, from about 1900 to 1910, the rulers of the Ubangi-Shari region increased both their slave-raiding activities and the selling of local produce to Europe. They took advantage of their treaties with the French to procure more weapons, which were used to capture more slaves: much of the eastern half of Ubangi-Shari was depopulated as a result of slave-trading by local rulers during the first decade of colonial rule. After the power of local African rulers was destroyed by the French, slave raiding greatly diminished.