A Serbian nationalist assassinated him and his wife in an effort to protest against the Austria-Hungary invasion of Bosnia. Serbians wanted to have control over Bosnia and they stopped at nothing to fight for it. After the assassination the archduke Austria-Hungary declared war on Serbia (americanhistory.about.com). Russia had an alliance with Serbia, so when Austria-Hungary attacked, Russia began to mobilize their forces to help defend. Germany was in an alliance with Austria-Hungary, when Russia fought against them Germany decided to strike back against Russia and Serbia (americanhistory.about.com). Thus began the war.
Over the turn of the century new technology in weapons and warfare flourished. World War 1 was known to be the start of trench warfare. Trench warfare is a term used to describe the use of trenches dug out to aid in battle (americanhistory.about.com). One of the main aids to the battlefield and trench warfare were landmines. Landmines were a relatively new and polished weapon which was brought to attention during the World War 1. This new development caused major problems to the opposing force on the battlefield. Landmines were mainly a counter to