Oh, that's rich, carny. How, pray tell, does one "destroy" a mere trail? Oh no! Antebellum-era "dams" were destroyed? Whatever did the beavers of the American southeast do?! And the crops! Ohhh, the crops! How can any civilization ever recover from losing some barley and cotton a century and a half ago? By your estimation, I suppose 9/11 probably set New York back until about the year 5000, right? Christ, man, I live in Chicago! Our entire friggin' city was burned down SIX YEARS AFTER the Civil War ended!!! Holy fucking shit, what would we be BUT FOR the fire? But for the fire, Chicago would probably dwarf New York, London and Tokyo put together, in all measurable aspects. Hell, throw Singapore, Mexico City and Berlin in there too, just for fun.
Take a minute out of your evidently busy day and google the "Tennessee Valley Authority", cretin. Reading about the federal dollars a great democratic President like FDR poured into the region to haul your brethren into the 20th century will probably cause a tear to roll down your pasty-white face. A notable accomplishment, to be sure, but no replacement for those grand and lovely beaver dams so callously destroyed by the madman Sherman and his nefarious comrades.
The beavers. Remember the beavers. Never again.