Question

What is the significance of red line on the map?

Answer 1

Union Pacific

Step-by-step explanation:

Electing to forgo beginning construction with a costly and time-consuming bridge over the Missouri River, Union Pacific broke ground in Omaha Dec. 3, 1863. Despite this early start, rails were not laid until July 10, 1865, and then only reached Omaha's outskirts. But in 1866, the Civil War was over and an influx of labor, materials and money allowed the railroad to push through Nebraska and into the mountains in southern Wyoming, crossing the continental divide at Sherman Summit April 5, 1868. By 1869, Union Pacific had pushed into Utah, racing for the Nevada border. By May 1869, Union Pacific had constructed eight bridges, including the 700-foot-long Dale Creek trestle in Wyoming, and four tunnels: three in Echo Canyon, Utah, and one in Wyoming. Harsh Plains winters, brutal heat, battles with the Lakota and Cheyenne over land, and the omnipresent need for supplies were constant companions for Union Pacific crews, and yet, in just seven years, 1,086 miles of track existed between the Missouri River and Promontory Summit, Utah.

Answer 2

That is the California Trail! The California Trail was an emigrant trail of about 3,000 miles across the western half of North America from Missouri River towns to what is now the state of California. After it was established, the first half of the California Trail followed the same corridor of networked river valley trails as the Oregon Trail and the Mormon Trail. :)