1. In the last thread I think someone claimed it would've collapsed by now. Now I'm personally disinclined to believe that, but I was also disinclined to believe it about the Hoover Dam, so.
2. More or less.
3. No, it is. This is effectively a new Mexican affair: as I said, it is a confederacy in name only.
1. While it'd be absolutely useless as a power plant the actual structure would last 10,000 years. And with a far reduced water demand, the small community in Vegas would have more than enough water to survive. While Vegas would be struggling water wouldn't be something they'd need to worry about.
4. Good. That map added some interesting flavor to that post and I'd like to see your take on some of White's ideas. Like the Venice-like rump United States.