Countries should maintain a strong military capability and prepare to use it aggressively to defend or promote nation interests. Germany defeated France (1871) European arms race German "Schlieffen Plan"
Triple alliance. Triple entente.
Having pride in there country and wanting to be independent German nationalism. Growing nationalism especially Serbia. French anger over loss of Alsace Lorraline.
Countries tried to dominate other countries land because they had more power due to the political, economic and cultural life. Growing imperialism of Germany. Naval rivalry between Britain and Germany. Rivalry between Austria and Russia in the Balkans.
The act of killing someone. On June 28, 1914, Serbian nationalist Gavrilo Princip killed Archduke Franz Ferdinand. Ferdinand was hier to the Austro-Hungarian throne, in Sarajevo, Bosnia.
The Black Hand
Serbian Nationalist group that was responsible for assassination of Archduke Franz Ferdinand; a terrorist group
Country A has created a new weapon of mass destruction. As a result, Country B feels threatened and takes the opportunity to build up their military and create new weapons for themselves.
Terrorists have a strong connection to their home country or religious group taking this feeling of pride to a dangerous level that can create tension among nations and groups
Country A needs a way to obtain natural resources. They decide to acquire territories under their control so that they can get the needed resources at an inexpensive price.
Country A has developed relationships with three different countries that are known enemies. The relationships and agreements are being kept secret so that Country A can benefit from cheap resources without conflict.