Question

Nhat made working conditions on the Central Pacific Railroad especially dangerous?

Central Pacific workers had to blast through mountain ranges to lay track.
Central Pacific workers had to lay track along the level plains.
Most Central Pacific workers were immigrants from Ireland.
Most Central Pacific workers were immigrants from China.

Answer 1

Central Pacific workers had to blast through mountain ranges to lay track since this made working conditions on the Central Pacific Railroad especially dangerous.

Central Pacific workers had to blast through mountain ranges to lay track.

Step-by-step explanation:

Central Pacific constructed huge wooden trestles, and they used gunpowder and nitroglycerine so as to blast the tunnels through granite.

The track crossed the Sierra Nevada Mountains directing to Nevada, followed the Humboldt River and it was linked with Union Pacific Railroad at Promontory point near Ogden, Utah.

After the construction began, over 80-90 percent of the Central Pacific workforce was Chinese, the rest were of European-American descent and mostly Irish. Central Pacific laid 690 miles of track, starting from Sacramento into the new state of Nevada.