Diplomacy in Action. Sanctioned Entities List. The Department of State has sanctioned the following entity for its commercial activities in Iran, pursuant to its authorities under the Iran Sanctions Act of 1996, as amended.
The two railroad companies involved in the transcontinental  railroad were the Union Pacific and the Central Pacific. They  completed the track on May 10, 1869 at Promontoryâ¦ Summit, Utah.
Nevertheless, on May 10, 1869, the Union Pacific joined the Central Pacific, NW of Ogden, Utah, thus connecting the Missouri River and the Pacific Ocean by rail and completing the nation's first transcontinental railroad. The joining of the roads was marked in ceremony by the driving of a golden spike.