Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Pearling, Testimony of an Island Economy' has mentioned 'Gulf' in the following places:
Occurrence Sentence Text Source
The site is the last remaining complete example of the cultural tradition of pearling and the wealth it generated at a time when the trade dominated the Gulf economy (2nd century to the 1930s when Japan developed cultured pearls).
As the best-known source of pearls since ancient times, the Gulf industry reached the apex of its prosperity at the end of the 19th and beginning of the 20th centuries.