The president is commander in chief and has the power to control the military. This allows him to enact martial law which can be used on our own soil to put down rebellions and threats to our public peace as well as our institution.
Basically my best bet is martial law.
A, if they import less they are spending less and if they export more they are making more money. more money = more profit = richer country
Spain and Portugal colonized much or south america.
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.