World War I was triggered by a complex interplay of factors including nationalism, imperialism, militarism, and a system of alliances. The assassination of Archduke Franz Ferdinand in 1914 served as the immediate spark. Key events include the formation of the Triple Alliance and Triple Entente, rising tensions in the Balkans, and a series of declarations of war following Austria-Hungary's ultimatum to Serbia. The conflict quickly escalated into a global war due to the interconnected alliances and imperial ambitions of European powers.
• The causes of World War One were multifaceted, involving long-standing rivalries and immediate triggers.
• The war began with the assassination of Archduke Franz Ferdinand, but its roots lay in deeper geopolitical tensions.
• The alliance system, imperialism, and nationalism played crucial roles in escalating the conflict to a global scale.
• The Balkans region was particularly volatile, described as a "powder keg" ready to ignite.
• The timeline of events in 1914 shows a rapid succession of declarations of war, drawing major powers into the conflict.