Plessy v Ferguson was a landmark case and was a United States Supreme Court decision to uphold the laws that kept segregation, under the phrase "separate but equal". This regarded public facilities for the most part including buses, bathrooms and water fountains. This was brought from the Committee of Citizens in New Orleans, so this was applied across the board in Louisiana.
Answer:
<h2>BIOSPHERE</h2>
Explanation:
Human beings like animals or plants are part of the biosphere, one of the spheres in the earth.
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C. allows historians to confirm that a source’s information is correct. Hope that helps!