Alexander murdered innocent people who stood in his way and didn't listen to his men.
The United States and South Africa share strong educational and people-to-people ties, significant economic and political interests, as well as common development objectives throughout Africa. ... The United States seeks opportunities for increased U.S.-South African cooperation on regional and international issues.
The correct answer would be "suppressing anti-Austrian groups and publications".
However, while Austria did not demand that Serbia "accept responsibility for the assassination" of the archduke, they did demand the Serbia accept an inquiry on the matter, despite the fact that they were already conducting an internal investigation. Serbia did not accept this condition.