Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Banc d'Arguin National Park' has mentioned 'Trade' in the following places:
Occurrence Sentence Text Source
In 1638, however, they were replaced by the Dutch, who were the first to begin exploiting the gum arabic trade.
The Maures also took advantage of the Europeans whenever possible, so that when the French negotiated with the amir of Trarza to secure a monopoly on the gum Arabic trade, the amir in exchange demanded a considerable number of gifts.