ELI5: Explain Like I'm 5

Pan-Arabism

Pan-arabism is a movement to unite all of the countries in the Arab world as one big country. It is based around the idea that all Arab people share a common language and culture, and so should be able to get together to form one big nation. It is similar to how people in the United States can all be part of the same nation even though they come from different states.
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