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Explore Wonders | Find: 哪里能买到德克萨斯州立大学文凭毕业证【咨询网:ｂｚｗ９８５.ｃｏｍ】北京房山哪里能办华夏银行ATM机凭条-哪里可以制作国立学院毕业证（证件网:ｂｚｗ９８５.ｃｏｍ)哪里能办新西兰KYC认证资料Yi | Wonderopolis

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Why Do Donuts Have Holes?

We think today’s Wonder of the Day is going to be a HOLE lot of fun!

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Why Do Donuts Have Holes?
What Was the Joseon Dynasty in Korea?

Throughout history, there have been many famous empires and dynasties. Today’s Wonder explores Korea’s Joseon Dynasty.

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What Was the Joseon Dynasty in Korea?
Where Does Old Money Go?

Today’s Wonder of the Day takes a look at what happens to old, dirty bills!

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Where Does Old Money Go?