Robert Gray support the eventual development of Chinook Jargon because he was the first American to trade with the Chinook people.
Option: B
Explanation:
Robert Grey was the first American merchant who entered into the Columbia river and interacted with Chinook people. Chinook Jargon is the primitive native American language. Chinook people used to communicate through this language Chinook Jargon.
Chinook people lived in the bank of Columbia river. Robert Grey reached there in the year of 1792. Before him no European navigators visited that part of the Columbia river where Chinook people lived. Communication problem was one of the main hindrance in trading of Chinook people.
