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The atmosphere becomes opaque to infrared radiation when it
Ex-Slaves
Ex-slaves, also known as freedmen, were individuals who had been enslaved and were released from slavery, facing numerous challenges in integrating into society and securing economic and civil rights post-emancipation.
Shakers
A religious sect known for their celibate lifestyle, communal living, and distinctive dance rituals, originally established in 18th-century England and later moving to America.
Dual Personality
A psychological condition, often depicted in literature and media, where an individual exhibits two distinct identities or personalities.
David Walker
An African American abolitionist, writer, and anti-slavery activist in the 19th century, known for his 1829 pamphlet "David Walker's Appeal," which called for the end of slavery and racial discrimination.
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