<prompt> Translate the following text to SwahiliHenceforth Fort-de-France would be the islands only significant center and the largest city in the French Antilles.  <response>: Kuanzia wakati huo na kuendelea Fort-de-France ingekuwa kitovu pekee muhimu cha kisiwa hicho na jiji kubwa zaidi katika Visiwa vya Antilles vya Ufaransa. 