Answer:
C) improvements in working conditions for Chinese workers.
Step-by-step explanation:
The Transcontinental Railroad which aimed at linking the U.S from the east to the west was completed in the year 1869 and its completion resulted in many developments.
It enhanced the goals of the Manifest Destiny. It has connected the Atlantic coast to the Pacific coast and has helped in efficient transport of people and goods across nations.
However, there was no improvements in working conditions for Chinese workers. As many European workers left the railroad industry to work in other fields, Chinese workers were migrated over to Europe to complete the railroad.
The Chinese workers had to work under bad working conditions and at great risks but there was very little to their security and well-being.