The last one should be the correct one
The fight for women's rights started with them not being able to vote, being treated like they were only good at cleaning and cooking, and those who were against slavery were not allowed to speak at conventions and were even seated outside as spectators.
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The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material. Electrons emitted in this manner are called photoelectrons
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The United Nations is an international organization founded in 1945 after the Second World War by 51 countries committed to maintaining international peace and security, developing friendly relations among nations and promoting social progress, better living standards and human rights.
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