Which development would best serve as a turning point between two
historical periods?

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.

What was the compromise that allowed california to be admitted to the union

Why is the treaty of paris (1763) important to the age of discovery/exploration?