The correct answers are C) the railroad cut travel time between the east and the west coast of the united states by many weeks and D) the railroad led to the creation of uniform time zones in order to make scheduling trains easier.
Two results of the construction of the transcontinental railroad were "the railroad cut travel time between the east and the west coast of the united states by many weeks and the railroad led to the creation of uniform time zones in order to make scheduling trains easier."
The Pacific Railroad Act of 1862 designated the Central Pacific and the Union Pacific companies to build the railroad that connected the East of the country with the Pacific West. They worked seven years to connect Sacramento, California with Omaha, Nebraska, and the feat was finally reached on May10, 1869. The meeting point was Promotory, Utah.