0. Gorbachev dissolved his office and handed over his powers to the new Russian President. The countries that made up the USSR gained their independence, creating 15 new countries.
a. German Reunification c. Forbidden City
b. Tiananmen Square d. Dissolution of the Soviet Union

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Explanation:

Who was Mikhail Gorbachev and what was his contribution toward the development of the Russian Federation?

Mikhail Gorbachev was a Soviet politician. Gorbachev served as the last general secretary of the Communist Party of the Soviet Union (1985–91) as well as the last president of the Soviet Union (1990–91). Both as general secretary and as president, Gorbachev supported democratic reforms.

part a. there were 250 teenagers surveyed (100% of tenagers = 250)therefore 1 % = 250/100 = 2.5 76% = 1% x 76 = 2.5 x 76 = 190 teenagers of the 250 surveyed liked burgerspart b: jane surveyed 25% (which is equal to 50 teenagers, i.e. a quarter of the teenagers surveyed is 50) to get 100% we simply get 4 quarters, i.e. multiply 50 by 4 = 200 teenagers were surveyed by jane. part c: it is impossible to give an example where a percentage is greater than 100%, since, by definition , percentage means "per 100".

b is the answer i am assuming