WORLD HISTORY

Detailed explanation-1: -It made commerce possible on a vast scale. In addition to transporting western food crops and raw materials to East Coast markets and manufactured goods from East Coast cities to the West Coast, the railroad also facilitated international trade.

Detailed explanation-2: -A transcontinental railroad or transcontinental railway is contiguous railroad trackage, that crosses a continental land mass and has terminals at different oceans or continental borders.

Detailed explanation-3: -A freight train, cargo train, or goods train is a group of freight cars (US) or goods wagons (International Union of Railways) hauled by one or more locomotives on a railway, transporting cargo all or some of the way between the shipper and the intended destination as part of the logistics chain.

Detailed explanation-4: -While much of the original transcontinental railroad tracks are still in use, the complete, intact line fell out of operation in 1904, when a shorter route bypassed Promontory Summit.