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.
<span>A centrally planned economy oppose these basic economic characteristics- Property owned by private individuals, Market pricing determination by supply and demand forces, encouragement of competition among the companies and providing a wide range of choice to consumer. Therefore, a centrally planned economy believes in restricted type of economy which is mostly governed by government.</span>
Isolationism was the policy that kept them from joining the League of Nations. Isolationism is when a group stays away from or ignores all people in that group. Mainly political matters of other countries.