7. On June 28, 1914, a young Bosnian nationalist shot and ki…

7. On June 28, 1914, а yоung Bоsniаn nаtiоnalist shot and killed Archduke Francis Ferdinand, heir to Austria-Hungary’s throne, and his wife​. Austria-Hungary then prepared for war against Serbia, with German encouragement and support​. Germany implemented the ____________________ and with their invasion of Belgium and the attack on France, WWI had begun​.