Referred to a willingness of soviet leaders to allow western ideas to spread in the soviet union as a way to reform government and the economy.

Glasnost

Explanation:

Mikhail Gorbachev started this policy in late 1980's and began to democratise soviet union. It led to the fundamental changes to the political structure of Soviet Union and reduced the power of the communist party and led to multi candidate elections. The policy also allowed  the criticism of government and allowed the media to be free to disseminate information and news.

they both built pyramids.