The focus is on the God having the right to exclusive worship by the people, to the exclusion of any other gods or representations of other gods. They actually focus on obedience to God.
This was a mixture of things.
The increase in population from soldiers and influx of immigrants caused the need for more food to be produced and more jobs to be demanded. So farmers started over producing which led to the Dust Bowl and, eventually, the Great Depression.
Democracy originated in Ancient Greece
