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railroad company officials
The invention of the standard gauge made a network of railroad lines possible.
from Nevada sierra to the rocky mountains
The Sierra Nevada mountains.
Quebec City
Julia Tuttle, a local citrus grower convinced Henry M. Flagler, the hotel baron and railroad tycoon to expand the Florida East Coast Railroad to Miami. He made it a railroad hub, dredged the harbor, began a recreational center, and promoted tourism.
stock watering and bribery of public officials
mountains and basins
The Central Pacific Railroad.
Completed with a Golden Spike ceremony at Promontory Summit, Utah on May 10th, 1869, the First Transcontinental Railroad linked California with the existing rail network of the eastern United States.
all of the above are correct
Approximately 2 years.