How did hitlers speech before the start of the war demonstrate genocidal intentions

After the supreme court’s ruling on the dred scott case, many people in the north believed that a. slavery might become legal everywhere. b. slavery might be banned everywhere. c. formerly enslaved people would move to the north. d. formerly enslaved people would stay in the south.

Need on these last 2 questions on my social studies homework 5 and 6 then i’m done with the homework

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.