More advances in technology and science
Answer: <em>Petroleum.</em>
Explanation: John D. Rockefeller built his first refinery in 1870. He had a monopoly of oil in the oil industry of the U.S.
He became rich buying the companies of his rivals and creating companies to sell his products in the world. In 1882 he had the control of 90% of the refineries of the country. He was considered a Captain of Industry, for making so much money and for become a philanthropist, that donated a lot of money.
<span>settlers on the frontier</span>
The Magna Carta is an important document in the United States political history because it contains the most basic laws and responsibilities of the government to the state. In addition to that, the concept of due process, in which the accused must undergo a court hearing before a decision is made, has also its roots traced to the document.
