Why was cornwallis’s choice of making a stand at yorktown on the peninsula on the chesapeake bay was a good one as well as a poor one

How did the united states surprise other delegates at the washington naval conference in 1921

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.

Name three new weapons that changed how ww! was fought and how?