If you mean ethnicity wise, African Americans (men only) received the right to vote in 1870. If you mean when did women get to vote, it was in 1920, August 26.
None of the options seem to be correct since you can only use a maximum of 280 characters on a Twitter message. If you round it up though, the answer would be 300.
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Answer:
Light
Explanation:
When it comes to the amount of light that enters the eyes, we should know that this amount must be within certain limits, thus being constant. The pupil controls light in and out, so it has openings that contract in bright places and dilates in dimly lit places. So this work done by the pupil is called light adaptation. An example of this is when you wake up in the morning and squint at the light as you open your eyes, but in just a few seconds you can open your eyes all the way, even though the room is brightly lit.
Linguistic Anthropology & Biological Anthropology