Answer:
a. the creation of the League of Nations
Explanation:
a group that was developed as a way to solve disputes between countries before they erupted into warfare
“perestroika” (“restructuring” of the government) and “glasnost” (“openness”, more power to the people)
The third option seems to be the most likely, as the first and fourth options reflect conservative beliefs, and the second option isn't based upon party lines.
So the answer would be the third option.
