The dust bowl is a cause
The drought in the midwest is a cause
Creating social security helped end great depression
Over production was a cause
Im gonna say winning the first world war did since it generally did
And demand fell after the war is a cause
D.mercantiliat policies favored negative trade balances
Because they had a different currency than the rest of the world and wanted to compete in what historians call the "The Great Coin Race" which started in 19 A.D. and ended in 1339. The soon regretted this.
Cyrus' conquest was relatively humane compared to empires preceding his, such as the Babylonians and Assyrians. He allowed many areas of his empire a great deal of autonomy, rather than centrally controlling things. This distributed leadership allowed Persia to cover a greater geographical area than previous empires in that era and still be fairly stable, since most of its subjects were content to remain under Persian rule. Persian law was more codified and less arbitrary than previous empires; the king's seal declared approval of law which could only be reversed by further approved decrees -- not quite rule of law but going in that direction.
I think the form if government called democracy was formed there
