I need help please answer this :)

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 of the following people did not run for president in 1848. a. lewis cass. b. zachary taylor. c. martin van buren. d. millard fillmore.

Which sentence best compares the employment opportunities between farms and cities in the late 1800s