What were the long-term causes of World War II? we’re any of them also long term effects of world war I?

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.

How did the economic impacts of the great depression differ in the united states and in the soviet union?

There are no written records of the first migration of humans to the americas? true or false