The correct answer is: "Chinese".
The Central Pacific Railroad connected California and Utah since the 1860s decade. It was constructed as the Western branch of the "First Transcontinental Railroad" located in North America.
<u>Chinese immigrants were a crucial labor source during the construction of the railroad.</u> More and more Chinese men continued arriving and were hired even tough the working conditions were extremely harsh and they received less compensation that their white counterparts.
C) Illuminated manuscripts in more legible script
I believe it’s Cascading Style Sheets
Probably The 3rd Estate Of The Revolution .