WORLD HISTORY

Detailed explanation-1: -Germany’s violation of Belgian neutrality and British fears of German domination in Europe brought Britain and its empire into the war on 4 August.

Detailed explanation-2: -To avoid the French fortifications along the French-German border, the troops had to cross Belgium and attack the French Army by the north. Of course, Belgians refused to let them through, so the Germans decided to enter by force and invaded Belgium on Aug. 4, 1914.

Detailed explanation-3: -Britain was not a party to any military alliance in Europe. However, when Germany invaded Belgium, breaking the 1839 Treaty of London, which guaranteed Belgian neutrality, Britain declared war against Germany.

Detailed explanation-4: -The German invasion of Belgium caused Britain to declare war on Germany on August 4. Most of the main parties were now at war. In October 1914, Turkey joined the war on Germany’s side, becoming part of the Central Powers.

Detailed explanation-5: -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. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.