Why did photographers travel with their dark rooms in the 1800s?

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.

the   square   deal   was   a   program   where   the   government gave any one   a fair   chance   to succeed

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worked constantly and gave many sincere speeches about the importance of independence