How was the transcontinental railroad created?

Eight Irish tracklayers put down 3,520 rails, while other workers laid 25,800 ties and drove 28,160 spikes in a single day. 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.

the american colonists were happy with their vicorty, but the french were mad and the french and indians were not alies, and neither were the french and colonist. i think,