Key inventions of the industrial revolution include all of the following except for ______.

One of the most significant and influential books advocating functionalism as a viable approach to peace was A Working Peace System: An Argument for the Functional Development of International Organization. The author of the book was ________.

a. Dag Hammarskjöld b. Robert Holms c. David Mitrany d. Gene Sharp

George W. Bush’s national security strategy, released in September 2002, asserted that the United States maintained the option to use _____________ actions to counter a threat to its national security.

Fill in the blank(s) with the appropriate word(s).