Guangzhou was China's major seaport for 2,000 years and the center for European traders in the 19th century.
European traders chose to do most of their trading through Guangzhou's port.
mnli hypothesis: European traders chose to do most of their trading through Guangzhou's port. premise: Guangzhou was China's major seaport for 2,000 years and the center for European traders in the 19th century.