What is the best way to study QUICKLY and EFFECTIVELY at the same time? especially subjects like history or geography or any other material??

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.

The land of ordinance of1785 addressed

Based on this map, approximately how far did the songhai empire stretch east tward into the interior from the coast