Why are all of these cities in a straight line?

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Guess which country I'm from based on which US states I've been to.

Now with a full-blown technicolor map of where I live in the photo!

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Guess what country I’m from based on the colors

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Outshitted, by the real world

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Voyager took over a year to get to Jupiter, Florida

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Is there s lore reason why all the major cities are on this line? Why can't they manifest destiny? Aren't there rivers in the west?

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I know this is a stupid question so you don't need to insult me but is there a name for this region?

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why are these two cities in a curved line?

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Why does Macedonia have so few islands compared to its neighbors?

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Guess where i am from based on the states i have been to

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Why

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