This 1975 re-enactment celebrates the driving of the "Golden Spike" in Promontory, Utah, marking the completion of the Transcontinental Railroad.
Photograph by James L. Amos, National Geographic
legislative branch of the government, responsible for making laws. The U.S. Congress has two bodies, the House of Representatives and the Senate.
process of enlarging.
study and investigation of unknown places, concepts, or issues.
person who moves to a new country or region.
a study or analysis of characteristics of an area or a population.
railroad that spans an entire continent.
railroad company headquartered in Omaha, Nebraska. Union Pacific began as part of the first U.S. transcontinental railroad, running from Nebraska to Utah.