Answer:
Nationalism and imperialism encouraged each European nation to pursue its own interests and compete for power. ... The alliance system pulled one nation after another into the conflict.
Explanation:
A. Ancient Ones
I just looked it up on google
The Comstock Act was what made it illegal to spread them
Gibbons v. Ogden,was a landmark decision in which the Supreme Court of the United States held that the power to regulate interstate commerce, granted to Congress by the Commerce Clause of the United States Constitution, encompassed the power to regulate navigation. The case was argued by some of America's most admired and capable attorneys at the time. Exiled Irish patriot Thomas Addis Emmet and Thomas J. Oakley argued for Ogden, while U.S. Attorney General William Wirt and Daniel Webster argued for Gibbons.