Comparative advantage. It is being able to produce goods by using fewer resources, at a lower opportunity cost, that gives countries a comparative advantage. The gradient of a PPF reflects the opportunity cost of production. Increasing the production of one good means that less of another can be produced.
<u>The correct answer is D. Gold was discovered in the Black Hills of South Dakota</u>. The federal government forgot the <em><u>Treaty of Laramie of 1868,</u></em> and on December 3, 1875, <em><u>ordered the Sioux to evacuate the territory and decreed a peremptory period (January 31, 1876</u></em>), after which those who refused to return to the reserves would be considered "hostile" with all the consequences that this term implied. The federal government decided to organize a military expedition to expel the now "hostiles" from the territory that had formally been recognized only eight years ago. In February 1876, preparations began. A long and extensive campaign was foreseen, given the difficulties of the climate and the immensity of the territory that had to be covered. In a first expedition, <em><u>the general George Crook left the first of March of 1876 towards the valleys of the Yellowstone and the Powder River, with the specific mission to destroy the village of the chief Sioux Caballo Loco</u></em>, after the Sioux Tribe declared war on the intruders and on the United States, as a consequence of the permanent invasions of <u>the sacred territory of the Black Hills because of the discovery of the existence of gold in 1871.</u>
President Coolidge served as the 30th president of the United States.
<h3> President Coolidge and Tax Reforms</h3>
President Coolidge was well known for his tax reforms. He argued that higher taxes do not always mean higher tax revenues. He believed that taxes can constrict economic activity, leaving less profit and income to tax.
According to Coolidge, extremely high tax rates produce little or no revenue, because they are bad for the country, and also because they are wrong.
President Coolidge understood that he could not finance the country and cannot improve social conditions, through any system of injustice.
Learn more about President Coolidge at brainly.com/question/1799809
Answer:
The Sioux peoples' treaty rights were constantly violated by gold prospectors, who kept crossing the reservation border. When they were attacked by our people defending their land, the United States government seized the Black Hills, in 1877 – illegally
Explanation: