Germany and Japan after WWII, can't think of any others since however.
Germany and Japan had democracies before WWII as well
Germany? I’m very grateful for that operation.
South Korea I think also was autocratic at some point, but with the help of USA became much better. There's still a ton of problems, corruption and nepotism, but it's still thousands times better than dictatorship.
At least we'd have a chance of making it work. With status quo it's just becoming worse and worse due to brain drain (all active conscious people find a way to leave the country).