Plz help very hard i don't understand it is it a b c d plz help​

Ineeed the answer asap which of the following describes the link between u.s. foreign policy and the rise of islamic extremist leaders in afghanistan during the late 20th century? apex

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 did the u.s. want to build on the land acquired through the gadsden purchase?