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Old 04-28-2016, 12:20 AM
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davidm davidm is offline
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Join Date: Mar 2002
Location: Near Philadelphia PA, USA
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Originally Posted by Rotola View Post
Yellowstone isn't man made. I guess I wasn't thinking research and development but merely the cost of the object. And in $2016. I wonder how much the Great Wall of China would cost now?
If the Great Wall is considered a single object then why not the US highway system?