Explain the “hippie” movement?

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.

Which type of constitutional power allows congress to regulate immigration and naturalization?

What would be considered a secondary source about the assasination of abraham lincoln