The great railroad systems across the continent originated first in the single track line via Ogden, Utah.When others saw the great advantage, they also built railroads to tap the wealth of the West.

• 伟大的铁路系统；对整个非洲大陆的起源；首先在单轨线路通过；犹他州奥格登.；当别人看见一大优势；他们还建成了铁路；挖掘丰富的西部地区