Yes thats roughly true US income tax on the top 10% in 1920 in the US was up to 76% (because of WW1) they reduced it to roughly 24% by 1929, they then like the Chinese now are the savers, they stimulated themselves back from the brink and lasted to 1929, the rest of the world collapsed from 1920 onwards, the franc lost 92% of ts value between 1920-1925, we all know what happened in wiemer Germany but we are not aware of riots in Scotland and England, and the Russian issues from 1917 are well known