Many of the workers on the transcontinetal railroad were

Chinese

Explanation:  At the height of the transcontinental construction period, the Central Pacific employed over 12,000 Chinese workers, which was more than 90 percent of the company's workforce

At the height of the transcontinental construction period, the Central Pacific employed over 12,000 Chinese workers, which was more than 90 percent of the company's workforce. The Central Pacific released Chinese workers in April 1869 with the completion of the railroad at Promontory, Utah.

Explanation:

hope that helps

can you explain it better

a) which ethnic groups live in this community?

i just took test