Trading houses were established in Stone town by American, German, French and English firms. Zanzibar harbor also offered fuel and repair services for war ships and merchant vessels.
Majengo ya biashara yalijengwa ndani ya Mji Mkongwe na Kampuni za Kimarekani, Kijerumani, Ufaransa na na Kiingereza. Bandari ya Zanzibar ilitoa huduma za fueli na kufanyia matengenezo Meli za kivita na vyombo vya usafiri vya wafanyabiashara.