Photographic paper reacts to light to produce the image taken by a camera and stored on film. Darkrooms used red lighting to allow photographers to control light carefully, so that light-sensitive photographic paper would not become overexposed and ruin the pictures during the developing process.
Cotton was what expanded slavery
I believe the answer is A.
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Is a social media photo campaign started by students at Duke University in 2012. The campaign attempted to shed light on misconceptions about feminism and to explore the continued need and relevance of feminism in today's society.