sentences:  As a result, people upstream of the Bangala mistook Bangi for the language of the Bangala and called it Lingala (language of the Bangala), and European missionaries followed suit.In the last two decades of the 19th century, after the forces of Leopold II of Belgium conquered the region and started exploiting it commercially, Bangi came into wider use.The colonial administration, in need of a common language for the region, started to use the language for administrative purposes.