Can you spot all seven mistakes?

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PS: I don't consider the lack of Washington D.C. a mistake, as this map is supposed to be about the U.S. states and the Canadian provinces and territories.

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The western Maryland panhandle is shown as part of Pennsylvania

I didn't consider that a mistake, as the state borders are very sloppily drawn in general.
But I do understand it if someone perceives it as a mistake.

Wrong board

I wasn't sure where to post this, but as the board title says something with "games" I thought this were the right place.

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No worries, as board moderator I would consider it a game indeed (under a loose definition of History Game). Do proceed.

Thank you. That's nice! 👍🏻

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What’s wrong with MA and CT?

Did you really ask that?

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Hawaii is missing.

Congrats! You found all seven mistakes. 👍🏻

The sad thing about that map is the fact that I wanted to look for a North American map that contains all U.S. states and Canadian provinces. And that map was the first result on Google Images. Embarrassing, isn't it? 

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There's one more: Most of the Canadian Arctic Archipelago is missing in the north.

That's right. I didn't realize that.
I had also considered whether to perceive Coos County and Southern Ontario as mistakes, but all the borders are drawn in such a sloppy way in general that it's hard for me to call all mistakes.

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The most important mistake is how ugly it is.

Oh, you haven't even seen NBC's artwork: