What was the major port and commercial center of china — a place known for its westernized culture in the 1920s and 1930s?

In the 1920s and 1930s, Shanghai, a place widely known for its westernized culture, was the major port and major commercial center of china. Currently, Shanghai, with a population size of over 24 million (2014 estimate) is the most populous city in the world.

the answer is a. mothma gupta.