(A) Lusitania Sunk ____ WWI begins ____ U.S. declares war on Germany ____ Archduke of Austria-Hungary Assassinated
(B) ** Archduke of Austria-Hungary assassinated ____ WWI begins ____ Lusitania Sunk ____ U.S. declares war on Germany
(C) Archduke of Austria-Hungary assassinated ____ U.S. declares war on Germany ____ Lusitania Sunk ____ WWI begins
(D) U.S. declares war on Germany ____ Archduke of Austria-Hungary assassinated ____ WWI begins ____ Lusitania Sunk
EXPLANATIONS BELOW
Concept note-1: -World War I started in 1914. In 1915, Italy entered the war. The USA entered the war in 1917. After the end of World War I in 1918, the Treaty of Versailles was signed in 1919.
Concept note-2: -This increase in militarism helped push the countries involved into war. The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary.