Term
|
Definition
| an oily, flammable liquid |
|
|
Term
|
Definition
| a government document giving an inventor the exculsive right to make or sell his or her invention for a specific number of years |
|
|
Term
|
Definition
| the pattern of good times and bad times in the economy |
|
|
Term
|
Definition
| a new way of making steel that was developed in the 1850s and caused steel production to soar |
|
|
Term
|
Definition
| Invented firsted lightbulb and phonograph |
|
|
Term
|
Definition
| a machine that produces electric current |
|
|
Term
|
Definition
|
|
Term
|
Definition
| an exhibition in Philadelphia in 1866 that celebrated America's 100th birthday |
|
|
Term
|
Definition
a railroad that spanned the whole continent |
|
|
Term
|
Definition
| a system in1918 that divided the united states into four time zones |
|
|
