__________ was Ronald Reagan's vice president and was elected 41st president of the United States in 1988. His presidency was marked by constant fighting with congressional Democrats, a weak economy, and a broken campaign pledge not to raise taxes. He served one term.

__________ was an American entrepreneur and founder of the Cable News Network, which used satellite uplinks to provide live televised coverage of news events around the world. His model inspired the creation of satellite news organizations in other countries.

__________ was the idea, first promulgated by George W. Bush in the aftermath of the attacks on September 11, 2001, that the United States could launch a military strike before a war began and even before a threat emerged.

__________ was the political philosophy that, with the help of other powerful countries, America should use foreign aid, military strength, NATO, and the United Nations to maintain a stable international system.

__________ is the use of organisms and their products to alter human health and environment.