In the 1860's, the First Transcontinental Railroad was built in the United States.

a. True

b. False

true

Explanation:

1869

"On May 10, 1869, at Promontory Summit, Utah, a golden spike was hammered into the final tie. The transcontinental railroad was built in six years almost entirely by hand.'' - DigitalHistory. edu

Answer: TRUE

Explanation:

The First Transcontinental Railroad (known originally as the "Pacific Railroad" and later as the "Overland Route") was a 1,912-mile (3,077 km) continuous railroad line constructed between 1863 and 1869 that connected the existing eastern U. S. rail network at Council Bluffs, Iowa with the Pacific coast at the Oakland.