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Which of the following was the center source of energy during the industrial a revolution

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?

What role did mazzini play in italian unification? a.) he dreamed of a united italy and took the first steps to achieving it. b.) he conquered the southern part of italy, including sicily. c.) he was the first leader of a united italy. d.) he was assassinated by the french government, making him a martyr.