Some factors of the Great Depression were the burst of the 1920s credit bubble in the United States as well as the overinflated investing market during the same decade. It helped cause WW2 by radicalising Germans (really by the Nazis) against the rest of the world who they already blamed for their troubles during the 20s.
Farming of plants and animals
An excise tax is are taxes that are paid when purchases on a specific good are made. An example of this could be the excise tax that's imposed when you purchase gasoline.
