Order these # Austria-Hungary, angered by the murder of its crown prince, declares war on Serbia # Germany, worried about attacks from both East and West launches an attack on France via Belgium # Germany was worried about the possibility of an attack from neighbouring France # A small group of Serbians got together to kill the future king of Austria-Hungary, Archduke Franz Ferdinand # Kaiser Wilhelm II started to build a larger navy than Britain's, creating tension between the two countries # Britain agreed to support and protect Belgium if she faced attack from neighbouring countries # French citizens in Alsace-Lorraine, and the French government wanted Alsace-Lorraine returned to France c

1- French citizens in Alsace-Lorraine, and the French government wanted Alsace-Lorraine returned to France

2- Kaiser Wilhelm II started to build a larger navy than Britain's, creating tension between the two countries

3- Britain agreed to support and protect Belgium if she faced attack from neighbouring countries

4- A small group of Serbians got together to kill the future king of Austria-Hungary, Archduke Franz Ferdinand

5- Austria-Hungary, angered by the murder of its crown prince, declares war on Serbia  

6- Germany was worried about the possibility of an attack from neighbouring France

7- Germany, worried about attacks from both East and West launches an attack on France via Belgium

These statements all refer to the beginning of World War I.

Explanation:

The First World War lasted from 1914 to 1918. It was attended by most of the world's great powers, grouped in two conflicting military alliances: the Allies (gathered around Triple Entente) and the Central Powers.

The Entente forces initially consisted of Serbia, Montenegro, Russia, France, the United Kingdom, Italy and Japan. Before the start of the war, the Central Powers consisted of Germany, Austria-Hungary, the Ottoman Empire and Bulgaria. The United States entered the war on April 6, 1917, following the publication of Zimmerman's telegram for the occasion. Romania joined the Entente in 1916 when the Bucharest Agreement was signed. Greece was neutral at the beginning of the war, but in 1917 it joined the Entente side. Until the end of the war, the European countries of the Netherlands, Switzerland, Spain and the Scandinavian countries remained officially neutral.  

The immediate cause of the war was the assassination of the heir to the Austro-Hungarian throne, Archduke Franz Ferdinand in Sarajevo on June 28, 1914, who was killed by Gavrilo Princip, a Serb from Bosnia, who was then part of Austro-Hungary. The declaration of war by Austro-Hungarian Republic triggered a number of alliances that have triggered a chain reaction of war announcements. By the end of August 1914, much of Europe was at war.