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In the Gram-staining procedure,the decolorizer is
Martin Delany
An African American abolitionist, journalist, and physician who was an influential advocate for Black nationalism and one of the first proponents of black nationalism.
Proslavery Defenses
Arguments or justifications used to support the institution of slavery.
Necessary Evil
A term used to describe something undesirable but considered unavoidable for achieving a better outcome.
Nineteenth Century
The period from January 1, 1801, to December 31, 1900, characterized by significant industrial, cultural, and political changes worldwide.
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