The correct answer is Samuel Adams.
Samuel Adams was a notable colonist who organized the Sons of Liberty in Boston.
Adams & the Sons of Liberty led protests against British taxation in the colonies after the 7-years war.
Adams also was a leader of the effort to use the Boston Massacre for propaganda, despite his cousin's role in defending the British soldiers.
Is your question: what improved the lives of the Russian serfs?
it was the Emancipation Reform of 1861 in Russia, which effectively abolished serfdom in Russia (serfs could not own land so they had to work for someone).
If you work for a government agency that regulates the buying and selling in the country, your government is presiding over a controlled economy, not a market economy.
Mao's legacy is subject to great controversy. Many Chinese consider Mao as a great revolutionary, a great leader. They claim their figure, although they admit that they made serious mistakes at the end of their government.
Critics of Mao, however, claim that he achieved successes of great importance. For example, before 1949, the illiteracy rate was 80% and the average life of the population was merely 44 years. At his death, the illiteracy rate had dropped to 20% and the average life increased to 65 years.
Mao argued that socialism was the only answer for China, due, among other arguments, to the fact that Western powers and particularly the United States, would never allow China to advance under a capitalist regime. In fact, this theory was not far from reality, because the United States maintained a trade embargo against the People's Republic of China that lasted until 1972, when Richard Nixon decided that China was a power that should be considered favorably in the Cold War with the Soviet Union.
At present, Mao's follow-up has been drastically reduced in China. In fact, some of his works have been much criticized later. The book Mao: The Unknown History, written by Jung Chang and Jon Halliday, points out that Mao created many myths regarding his achievements and his youth, in order to show himself as the hero of the people. They even claim that some incidents of the Long March, particularly the battle of the Luding Bridge, were totally false.
It depends on how one looks at Columbus, in some terms he was a hero for finding Spain more land & cultivating it in a way. He was also a Villian for the way he treated American natives.