World War 1 causes

1.
   The first main cause of World War 1 was called militarism. This was the belief that a nation should strive to have a strong military force in order to win the war. The competition from militarism in other nations caused alliances to grow stronger, and also, it would only add to increased war tensions later on.

   The second was alliances, a "joining up" of different countries to fight against other countries. The alliances were made up of the Allies (predominantly France, Russia, and Great Britain), and the Central Powers (consisting of Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria). This linked to the war because now the whole world was involved in the fight, as these alliances each fought for a common cause.

   Thirdly, imperialism, or the overpowering of a stronger country over a weaker one. This would be shown into action when countries in large, main empires took over other countries to become bigger, stronger nations.

   And finally, nationalism is the strong pride that a country has for their own nation. This would enable different nations in the Ottoman Empire and the Austro-Hungarian Empire to strike back and want to separate from them.

2.
   The real spark of the war was the asassination of the Archduke Franz Ferdinand, which put the Serbs and Austria-Hungary at war with each other, causing allies to form along the way.

3.
   Unrestricted submarine warfare- February, 1915:
This stated that Germany would attack merchant ships without warning to get the Allies to surrender.
   Lusitania- May 7, 1915:
This was a British ship that was sunk by the Germans and caused anger to arise, especially from the U.S. The Lusitania's sinking was an event that would win the Allies the help of the U.S.' aid.
   Sussex Pledge- March, 1916:
This was an agreement between Germany and the U.S. to stop unrestricted submarine warfare and stated that the U.S. was neutral.
   Zimmerman telegram- January 1917:
This was a telegram from Germany to Mexico to get Mexico on the Central Powers' side and to fight against the U.S.