Desalination plants on coasts take seawater, move salt from part of it to the other (larger) part, resulting in a stream of fresh water that's kept and a larger stream of salty brine that's returned to the ocean.
This is doable with reverse osmosis.
Extracting ALL the salt is much harder.
I'd be really really careful about introducing much (any) computer modeling. I don't know what kind of code is needed for the thermal modeling of engines, but your analytical engine is really, really really limited in power. Both in terms of speed and memory.
I/O is a problem, two. I guess...
They had never seen or heard of bubonic plague before. They had no idea what caused it or how it spread. Starting with the fact that they had no idea what a bacterium was.
Quarantine was the only effective measure then, and that would be clearly impossible once the plague reached the...
Following the 400m and 600m contours on google maps, I don't see anywhere where there's a pass as low as even 800m to the Red Sea. You might have to dig a 100km or more of canal ranging from 200m deep to 600m for a few km.
So.... surely not plausible even with today's tech, let alone in...
What I said a while back in another thread applies.
To do all that by human action (instead of having a volcano suddenly erupt and block the valley)
Would take a HUGE amount of effort. I'm not sure how high that dam would have to be, but it would be high.
And several votes weren't close at all.
Could VA, NC, AR, and TN stay in the Union? Sure.
But how do you stop SC through MS from seceding?
Edit: 'cool heads' and 'South Carolina ' are mutually exclusive in this era.
'too small to be a country, too big to be an insane asylum '
Err.... no Civil War means Lincoln is never elected, sure.
The US remains the dysfunctional mess it was in the 50s, with neither side able to enact much legislation. Transcontinental rail waits for 5 years or more, and when it does happen, there are two lines, northern and southern, to...