| A | B |
|---|
| investor | person who uses money to buy or make something that will make more money. |
| Mexican-American War | war fought in May of 1846 |
| stagecoach | horse-drawn carriage used to carry people, baggage and mail. |
| gold rush | large numbers of people went to California seeking gold. |
| interchangeable parts | standard-sized parts make so that a person can replace one part with another part. |
| cotton gin | machine used to remove the seeeds from cotton. |
| steam engine | kind of engine that used steam from boiling water to create power. |
| Industrial Revolution | Time period where goods that were made by hand are now machine made |
| canal | human-made waterway |
| reaper | used sharp blades to harvest grain |
