<prompt> Translate the following text to SwahiliFurther north, the British gradually gained the upper hand over their rivals, now including the French, for the Bengali trade that was to create Calcutta.  <response>: Zaidi kaskazini, Waingereza walipata hatua kwa hatua mkono juu ya wapinzani wao, sasa ikiwa ni pamoja na Kifaransa, kwa biashara ya Bengali ambayo ilikuwa kuunda Calcutta. 