Answer: The Printing Press
Explanation: Gutenberg made way for books to be copied mechanically, and not by hand, allowing books to become widespread for the first time.
The power within the constitution that specifically deny to state government is: D. the power to coin money
State governments only responsible for the well being and operation that occurs within their states jurisdiction. The power to coin money would affect all states nationwide, which is why this power is given to the federal government rather than state government.
The World war 1 has been documented as, World War, WWI, the War to End All Wars, and the Great War.