In the online article, "Run Out on the Rails", the author states that whites
ignored Chinese workers as long as:

the Chinese workers would accept low pay

the Chinese workers spoke English

the Chinese workers were content/happy performing the jobs few white men wanted

the Chinese workers were content/happy performing the jobs few white men wanted

Explanation:

At that time, there are no regulations made by the government to ensure the safety of railway workers.

The Railway companies at that time, require some of the workers to dig deep into the tunnel and strengthen the foundation of their rails. This jobs is extremely exhausting and dangerous . Very few white workers wanted to do it.

This is why this type of jobs usually given to the Chinese workers.

Chinese workers at that time received constant abuse and discrimination from the white workers. But as long as they are willing to do the dangerous/tedious jobs, they're usually got ignored.

answer; /// i believe that the correct answer is (divison of labor);

b. second continental congress