[scythe]

More descriptively, there was a cascade of revolutions and coups across Europe and Asia in the wake of WWI: Russia (1917), Germany (1918), Turkey (1919), Hungary (1918, 1919), Afghanistan (1919, independence), Egypt (1919, independence 1922), Morocco (1920, French conquest resumed), Mongolia (1921, independence), Italy (1922), Iran (1921, 1925), Portugal (1926), Poland (1926), Lithuania (1926), Arabia (1925, Saudi conquest), China (1928, KMT-CPC split), Iraq (1932, independence), Thailand (1932), Germany (1933, Nazis) Latvia (1934), Austria (1934), Estonia (1934, reversed 1938), Spain (1936), Romania (1938), probably some others I left out.

[TimTheTinker]

It's interesting to note how many of these revolutions and coups involved a fall to either communism or fascism. For the most part, these were not positive developments.

Perhaps the declining role monarchs across the world was a causal factor there -- countries of citizens trained to live with a highly authoritarian structure, who because of prior experience gravitated towards fascism/communism (also highly authoritarian)