Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Island of Saint-Louis' has mentioned 'Trade' in the following places:
Occurrence Sentence Text Source
The fortification permitted its factory to command foreign trade along the Senegal River.
They controlled most of the up-country river trade and they financed the principal Catholic institutions.
Access to its port became increasingly awkward in the age of the steamship and the completion of the Dakar-Saint Louis railroad in 1885 meant that up-country trade effectively circumvented its port.