It wasn't the Stock Market Crash that mad things terrible, the Banking collapse is what turned a Panic into a Depression.
Hoover isn't without blame, He picked both Mellon, and his replacement, Mills, who both believed in letting the weak burn
If you have Andrew Mellon at Treasury get hit by a Bus in 1928, there is no Great Depression, just the 'Panic of 1929'
It's near forgotten now, but Mellon was about to be impeached by Congress over his (lack of) action on the worsening economy.
His goal was liquidation of failing businesses...
The best German postwar Fleet would be light on BBs and BCs, given how useless the were during the previous War.
Keep the Mackensens, and sell/scrap the rest.
Keep just the four to 'Show the Flag' while the rest being Cruisers, needed for Trade Protection.
That won't alarm the British, which...
And FDR ran against the 'socialism' that Hoover did attempt during the Presidential Campaign.
The Federal Reserve actions caused the Depression, not the Crash, but Hoover's actions were not enough to reverse the economic spiral.
The Fed was making things worse after 1930 in cutting the money...
Skua was two years newer, an eternity in aircraft development in the late '30s.
The Skua was twice as heavy, with less installed power.
The Grumman was 37mph faster, and 560 miles more range, with a 13,000 foot higher ceiling.
Rate of climb was 1200 fpm better.
The Skua had more .30 class MGs...
I'd say that the Germans, Austrians and even Italians did transition, but their Monarchies were ended by outsiders after a lost war.
Extra points for Greek Republic reinstating their monarchy, till that was ended again by a Military Junta.
Mechanization is possible, as is having more RR rolling stock, locos and track workers to make sure that logistics work. Otherwise
you are stuck with 1870 horse drawn mobility.
Even that would have been enough if they were plans for a 'Special Forces' to grab vital bridges and that...
But taking territory within 100 miles of the Border is all that's really needed to control the productive bits of the Great White North and her 8.5M people.
At minimum, would be taking over the Maritimes, NF and Labrador and then BC+Yukon for total control and isolation
Iowa were better than the North Carolinas and SoDaks, and Standards were all but obsolete.
The Brits wanted G3s, but couldn't afford them, even without a Treaty,and got Nelsol and Rodsol instead.
But while USN going thru three BB classes, also did the same for carriers.
Then as War got going...
Even without national Prohibition of 18thA, a number of mostly Southern mid Atlantic and Great Plains states would be 'Dry', while other stay 'Wet'.
So you would see alcohol flows that way, rather than from Canada and Caribbean.
Belly and Wing radiators already a good distance apart with many inline tractor prop setups.
But with nose and rear filled with engines and piping between them, leaves little room for fuel, and wing volume will get crowded, fast, trying to fit guns, fuel and landing gear