Hello!
Mikhail Gorbachev was the last soviet leader. He had the control of the Soviet Union between 1985 and 1991 and started two great reforms:
The perestroika: economics measures to recover the Soviet Union. For example: reduced the investments in military and opened the market gradually.
The glasnost: the "freedom of speech" and government transparency to the people.
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The correct answer is the powers the constitution delegated to it.
During the development of the Constitution, the Anti-federalists were concerned about the size and power of the federal government. Many of these individuals were fearful that a strong federal government would become corrupt, just like Britiain's was before the colonists declared their independence. In order to prevent a tyrannical central government, the Anti-federalists proposed having the federal government only having the powers specifically given to them in the US Constitution.
“We are at the end of our string. There is nothing more we can do.