The man who mobilized the crowds in moscow to restore mikhail gorbachev to office was boris yeltsin.

True

Explanation:

At the beginning of his career, Boris Yeltsin was a strong supporter of Mikhail Gorbachev. Gorbachev's objective was to revive the Soviet economy, and in order to do so, he wanted to reform the political and social structure of the USSR. For this purpose, Gorbachev gathered a team of young, talented Communist Party members, of which Yeltsin was part. Yeltsin rose through the ranks and in 1986 he became a member of the Politburo. However, Yeltsin would eventually become critical of Gorbachev's "moderation" and would defend the implementation of a representative democracy.

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof

not to sure sdi, strategic defense initiative