Answer:
the east coast to the west coast.
Explanation:
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. Workers drove spikes into mountains, filled the holes with black powder, and blasted through the rock inch by inch.
On this day in 1869, the presidents of the Union Pacific and Central Pacific railroads meet in Promontory, Utah, and drive a ceremonial last spike into a rail line that connects their railroads. This made transcontinental railroad travel possible for the first time in U.S. history.
Route of the first American transcontinental railroad from Sacramento, California, to Council Bluffs, Iowa. Other railroads connected at Council Bluffs to cities throughout the East and Midwest.
