The answer is ''To exercise diplomacy or force''
Between 1812 and the American Civil war, the Untied States was gradually becoming a major regional player.
It was both growing in Territory as well as the economy.
It was also looking to develop a powerful Navy and gave officers to right to carry out diplomacy with the nations they encounter or use force if necessary.
The Indian Appropiation Act contained several acts enacted by the US Congress between the late 19th century and the early 20th century.
One of the most outstanding acts was the Indian Appropriations Act from 1871. According to it, Indians would not be treated anymore as an "independent nation, tribe, or power". In turn, Indians would be considered as "wards" of the federal goverment. This provision considers Indians somehow like children, as if they needed a tutor.
From this moment onwards, the US goverment did not have to mantain endless negotiations to sign treaties with the different Indian tribes. Also treaties that had been signed before the Act were not enforceable anymore.
The act made much easier for the US government to exercise control over lands which were previously dominated by the Indians.
The <em>Union</em> was confirmed by the most industrialized states in the country. This meant that the production of weapons and tools related to war logistics was controlled by them. Besides having more weapons and supplies, the <em>Union</em> also had more soldiers, as the population was considerably bigger in the north.
Railroads are a sign of development. In terms of war, they helped mobilize troops and resources along the country with relative ease in comparison to their <em>Confederate</em> counterparts. This represented a great advantage for the <em>Union</em>.
Besides having the previously mentioned advantages. The <em>Union</em> also had the naval power on their side and executed the blockade in an attempt to cut the resources from The <em>Confederacy</em>. As a response, the southern states replaced the growth of Cotton with other crops in order to have food supplies.
Stamp Act
Grenville was the British Prime Minister from 1763-1765 and was most famous for his passage of the Stamp Act.
The Stamp Act was wildly hated by the colonists. The act required a tax on government stamps or seals which were necessary to make documents official. All legal documents and contracts would need this stamp and each were tax with the passage of the Stamp Act. The act was so despised it caused rebellion and had to be repealed.
It was Russia that experienced a major revolution in the twentieth century, since in 1917 the communist Bolsheviks overthrew the Tsar of Russia because they felt that workers were being treated unfairly.