During the gorbachev era in russia, he began a policy of meaning an openness in government policies.

True. Mikhail Gorbachev begun the 8policies of “perestroika” and “glasnost. Which were aimed at reforming the Soviet Union. Perestroika refers to the reconstruction of the political and economic system established by the Communist Party. Glasnost meant the reform policy through promoting openness.

During the Gorbachev era in Russia, he began a policy of Perestrokia meaning an openness in government policies.

battle of saint-mihiel, (12–16 september 1918), allied victory and the first u.s.-led offensive in world war i. the allied attack against the saint-mihiel salient provided the americans with an opportunity to use their forces on the western front en masse.

explanation:

the answer would be choice c, cave paintings.