On August 4, Britain declared war on Germany after they invaded Belgium due to the Treaty of London. Incidents such as these had a great contribution to causing WWI. Of the four M.A.I.N. causes for WWI, I think that alliances contributed to this war the most for several reasons. My reasons to why alliances contributed the most includes all of the alliances formed throughout Europe and in parts of Asia and Africa. European leaders relied on alliances in order to keep protection and forms strength and security for those nations. Alliances such as the Treaty of London, the Three Emperors League, the Dual and Triple Alliance, the Franco-Russian Alliance, and the Triple Entente all played into the war. The Treaty of London was still active in
