Why do Americans call University college?

I'm just curious, I'm not having a go or anything, calling it college would make sense if the institutions were called "Yale College" or "Harvard College", when in reality they seem to all have university in the name e.g Yale University, Harvard University, New York University etc. Is... show more I'm just curious, I'm not having a go or anything, calling it college would make sense if the institutions were called "Yale College" or "Harvard College", when in reality they seem to all have university in the name e.g Yale University, Harvard University, New York University etc. Is there a particular reason for this?
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