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However, "The Gay Question" drew on more than a century of revolutionary Marxist scientific approach to understand how oppression arose and what it will take to eradicate it in all its forms. In doing so, the analysis widened and deepened the application and contributions of Marxism as a science of human economic development and the social relations it has produced.

McCubbin did not have to break fresh soil, he tilled it. Just as Charles Darwin's analysis of evolution created a new scientific understanding of species development, Engels and his life-long collaborator Karl Marx laid the groundwork for a scientific basis to understand social development.

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