It’s the eighth amendment
One way thing that the US could do about monopies is regulating them by breaking a monopoly up. In certain cases, government may decide a monopoly needs to be broken up because the firm has become too powerful. This rarely occurs. For example, the US looked into breaking up Microsoft, but in the end the action was dropped. This tends to be seen as an extreme step, and there is no guarantee the new firms won’t collude.
In this passage, the type of warfare being described by the author is "chemical warfare".
Indian Territory, also known as the Indian Territories and the Indian Country, was land within the United States of America reserved for the forced re-settlement of Native Americans. The general borders were set by the Indian Intercourse Act of 1834. The territory was located in the Central United States.
The Confederate States of America fought in the Civil War for the final goal of gaining independence from the Union. Similar to the American war for independence from Britain, the CSA sought to become a sovereign nation with the ability to pass its own laws, most of which applied to the institution of slavery.
