Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Historic Areas of Istanbul' has mentioned 'Trade' in the following places:
Occurrence Sentence Text Source
[15] Historically, the city has been ideally situated for trade and defense: The confluence of the Sea of Marmara, the Bosphorus, and the Golden Horn provide both ideal defense against enemy attack and a natural toll-gate.
[213] Trade is economically important, accounting for 30 percent of the economic output in the city.