I want to marry 7 men. Why is it illegal for a woman to marry seven men?

I want to marry one Swedish man, one Kurdish man, one black man, one Italian man, one Spanish man, one Arab man and one Russian man. I want to spend time with my Swedish husband on Monday, with my Kurdish husband on Tuesday, with my black husband on Wednesday, with my Italian husband on Thursday, with my Spanish husband on Friday, with my Arab husband on Saturday, and with my Russian husband on Sunday.
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none of them will know about each other
I want to marry 7 men. Why is it illegal for a woman to marry seven men?
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