 | Term | Definition |
| |
interstate highway system |
system of interconnected highways in the United States |
| |
transcontinental railroad |
a rail line that crosses an entire country |
| |
hub |
center of activity |
| |
steamboat |
boat powered by a steam engine |
| |
mound |
pile of earth or stone constructed by early Native Americans for a variety of purposes |
| |
William Clark |
explorer who led expedition to find water route to Pacific Ocean through Louisiana Territory |
| |
Meriwether Lewis |
explorer who helped Clark find a water route to the Pacific Ocean through Louisiana Territory |
| |
Cahokia, Illinois |
French trading post near St. Louis |
| |
St. Louis, Missouri |
city in Missouri where a French trading center became the Midwest transportation hub in the early 1800s |
| Add or remove terms from this set |
