Strolling through Bagamoyo’s narrow, unpaved streets takes you back to the mid-19th century, when the town was one of the most important settlements along the East African coast and the terminus of the trade caravan route linking Lake Tanganyika with the sea. Slaves, ivory, salt and copra were unloaded here before being shipped to Zanzibar Island and elsewhere, and many European explorers, including Richard Burton, Henry Morton Stanley and...