Question

During the 1800s, THIS was constructed across the entire US connecting the east coast to the west coast (it was first of its kind in the world and used Chinese and Irish immigrants as workers)

Answer 1

The First Transcontinental Railroad, completed in 1869, was the first railway to connect the east and west coasts of the US, significantly aided by Chinese and Irish immigrant labor.

Step-by-step explanation:

During the 1800s, the First Transcontinental Railroad was a monumental construction that connected the east coast to the west coast of the US. It was a significant engineering accomplishment of the industrial revolution, linking Omaha, Nebraska, with Sacramento, California. This groundbreaking project was the first of its kind in the world and was heavily reliant on the labor of Chinese and Irish immigrants. The undertaking, which commenced with the federal government's approval in 1862, included the Union Pacific and Central Pacific Railroads, who built track from each end until they met at Promontory Point, Utah. On May 10, 1869, the connection of these two railroads was commemorated with the driving of a golden spike, symbolizing a coast-to-coast United States.