Glasnost (openness) and Perestroika were the policies adopted by Mikhail
Gorbachev (answer C.) to save the Soviet economy- Gorbachev received Nobel Peace Prize for this.
In March 1985, Mikhail Gorbachev proposed policies of<em> perestroika </em>(restructuring) and <em>glasnost </em>(openness) in the Soviet Union. These seemed like policies that leaned in the direction of Western ways of economics and politics. <em>Perestroika </em>meant allowing some measure of private enterprise in the Soviet Union. <em>Glasnost </em>meant allowing a bit of freedom in regard to speech and publication. But don't get the idea that Gorbachev was trying to get rid of the Soviet communist system. He actually was trying to prop it up and preserve it, because it was starting to have many problems sustaining itself. But in the end, opening things up a bit with <em>perestroik</em>a and <em>glasnost </em>policies only pushed the USSR further in the direction of shedding the communist model under which it had lived for so long.
The final outcome of the Vietnam War was that North and South Vietnam were united under the Communist North in 1975 despite the best efforts of American servicemen who left the area following the Treaty of Paris in 1973.
a. monotheism is the belief in many gods, but polytheism I the belief in a single god. ... monotheism requires skepticism of belief, but polytheism requires absolute faith in god