Explanation:
Settlers used oil as an illuminant for medicine, and as grease for wagons and tools. Rock oil distilled from shale became available as kerosene even before the Industrial Revolution began. While traveling in Austria, John Austin, a New York merchant, observed an effective, cheap oil lamp and made a model that upgraded kerosene lamps. Soon the U.S. rock oil industry boomed as whale oil increased in price owing to the growing scarcity of that mammal. Samuel Downer, Jr., an early entrepreneur, patented “Kerosene” as a trade name in 1859 and licensed its usage. As oil production and refining increased, prices collapsed, which became characteristic of the industry.
George Washington was the first US president
<span>) The population has increased because of the immigration and slaves.
2) The population grew in leaps and bounds, primarily through immigration.
3) Roads, waterways, railroads, steam boats, and refrigerator railroad cars.
4) * Changes in transportation played a big part in the change of United States.
* The change in the industry such as more factories being opened.
* Many women had made progress in doing things that men would usually do.
* Changes were made to the Constitution.
5) The 14th Amendment had defined a citizen as "any person born or naturalized in the U.S." The 13th Amendment abolished slavery, and the15th Amendment prohibits the right to vote to someone due to their race, color,or servitude. </span>
The U.S. joined its allies--Britain, France, and Russia--to fight in World War I.
