Transcontinental railroad was finished in Promontory, Utah, in 1869. The Union Pacific Railroad and the Central Pacific Railroad met at Promontory Point. Leland Stanford drove in a golden spike to mark the completion of the rail lines. The spike was removed and preserved for history. Idea: Children could read more about the difficulties of the two train companies as they built the railroad lines. A good source of information is William Durbin’s The Journal of Sean Sullivan: A Transcontinental Railroad Worker.
Transcontinental Telegraph was completed in 1861. It was constructed in units and then joined together. Ending the need for the Pony Express, the telegraph operated until 1869 when a multi-line telegraph was constructed parallel to the Transcontinental Railroad. Children could learn more at: America’s Library.