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.
On May 10, after several delays, a crowd of workers and dignitaries watched as the final spike was driven linking the Central Pacific and Union Pacific. Telegraph cables immediately went out to President Grant and around the country with the news that the transcontinental railroad had been completed.