| A | B |
|---|
| Pony Express | mail delivery system that took ten days |
| Morse Code | series of dots and dashes used by telegraph operators |
| Samuel Morse | inventor of the telegraph |
| Telegraph | a device that used electricity to send messages along wires |
| Transcontinental Railroad | a railroad that stretched across the country |
| 1862 | when construction on the transcontinental railroad began |
| 1869 | when construction on the railroad ended |
| Central Pacific | railroad company that began building through the mountains |
| Union Pacific | railroad company that began building on the broac flat plains |
| California | place where the Central Pacific started building |
| Nebraska | place where the Union Pacific started building |
| Promontory Summit, Utah | place where the two tracks met and the golden spike was drive |
| Chinese worker | faced discrimination at the mining camps and worked for the Central Pacific Railroad company |
| Buffalo | animal that was killed by the white settlers and railroad workers because they were destrying the train tracks |
| 3 days | number of days it took to travel across the country by train |
| 10 days | the number of days it took the Pony Express to deliver mail or news |
| Native Americans | group whose life was forever changed with the construction of the railroad |
| Explosives | used to blast through the mountains |
| Sierra Nevada | mountain range that the Central Pacifi began building through |
| pioneer | new settler in an area |
