What was lincoln s belief about slavery

Which of the following is one example of an ideological conflict that became one of the causes of world war ii?

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.

Brainliestttme : ) -why is “extremist” a better term for describing the ideology of a terrorist?