The depression in the 1930s was caused by excess expansion of creditduring the 1920s. This over extension by banks caused an unnatural disequilibrium in the money markets that initially caused a boom then a bust. Booms are sure signs of impeding busts when fueled by loseeasy credit.
They were called monopolies and trust busters were put into place to close them
Austrian Empire controlled the city of Venice before the Unification of Italy.
D-Day was so risky because it was delayed so many times and bad weather wasn't on their side. The allies were successful because they mange to take out the turrets on top and storm in to the Nazis place above
Https://www.history.com/topics/cold-war/berlin-blockade
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