A best interest plea means that  a defendant does not admit guilt to any offense, but agrees that a guilty plea is in his best interest under the circumstances. The defendant is sentenced, while still able to disagree with the prosecutor's description of events.
The transcontinental railroad began in Omaha, Nebraska and ended in Sacramento, California. Two companies built the railroad. The Union Pacific Railroad company began laying track from Omaha to the west while the Central Pacific Railroad company headed east from Sacramento. They both met at the middle in Promontory, Utah on May 10, 1869.
Itinerary First Transcontinental 1869 2/2/11 10:52 AM. http://www.christopheloustau.com/100_Itinerary.htm Page 2 of 6. transcontinental line was finished and connected the railroad network of the East coast and the West, going. from Omaha to Sacramento. It opened the way to numerous lines which grew across the country.