Why were railroad companies in a hurry to complete many miles of track-laying in the mid-1800s?

During world war ll, the untied states was a member of the allies axis european theater pacific theater

The transcontinental railroad runs from the to the i. north ii. south iii. east iv. west a. i and ii b. ii and iii. c. iii and iv d. ii and iv

The 20th century was characterized by increasing globalization describe some of globalization major effects then identify whether the effects of globalization were better for developed countries or developing countries