| A | B |
| Prairie Schooner | Another name for Conestoga wagons |
| Frontier | Border between settled and unsettled land |
| Manifest Destiny | Belief that God wanted the whites to expand into the west |
| Santa Fe Trail | Earliest route along which goods were traded |
| Sentries | Guards posted along wagon train |
| Pioneers | People who moved into new western lands |
| Comstock Lode | Nevada silver strike |
| Prospector | Person looking for gold/silver |
| Rocker | Type of equipment used to sift for gold |
| Yukon Gold Rush | Also called the "Klondike" |
| Oregon Trail | Took people from Missouri to Oregon Territory |
| Pike's Peak | Gold rush in Colorado |
| Sutter's mill | California gold rush site |
| Clipper Ship | Type of vessel used by prospectors sailing to CA |