(A) ** Germany attack France first.
(B) France attacked Germany first.
(C) Austria-Hungary attacked France first.
(D) Germany attacked Russia first.
EXPLANATIONS BELOW
Concept note-1: -The spark that ignited World War I was struck in Sarajevo, Bosnia, where Archduke Franz Ferdinand-heir to the Austro-Hungarian Empire-was shot to death along with his wife, Sophie, by the Serbian nationalist Gavrilo Princip on June 28, 1914.
Concept note-2: -France and Germany declared war against each other on August 3. After crossing through neutral Luxembourg, the German army invaded Belgium on the night of August 3-4, prompting Great Britain, Belgium’s ally, to declare war against Germany.
Concept note-3: -Germany realized that a war with Russia meant a war with France, and so its war plans called for an immediate attack on France – through Belgium – hoping for a quick victory before the slow-moving Russians could become a factor.
Concept note-4: -France and Belgium begin full mobilization. August 3, 1914-Germany declares war on France, and invades neutral Belgium. Britain then sends an ultimatum, rejected by the Germans, to withdraw from Belgium.