When was the tipping point at whitch the united states could no longer be considered an isolated nation

What could have been done to stop the illegal voting? what about the violence?

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.

The dravidians descended from people who lived in