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African-Americans fought for both sides, joining whichever side promised them freedom. Native Americans - Throughout the revolution some agreements were made with the natives where they agreed to remain neutral to the fighting.
Answer:
Most liquid fuels in widespread use are derived from fossil fuels; however, there are several types, such as hydrogen fuel (for automotive uses), ethanol, and biodiesel, which are also categorized as a liquid fuel. Many liquid fuels play a primary role in transportation and the economy.