Mingst and Karns identify five key events that had an important impact on the creation of the UN (2012:19-21). First, European traditions and experience in international law and organization since the 16th century had a significant impact on the creation of an international organization in the 20th century. Second, the UN also evolved out of the Concert of Europe that was created by the Congress of Vienna in 1815. On the one hand, the Concert of Europe was dominated by the great powers, which acted as the guardians of the modern state system (Alger, 1995: 4). On the other hand, meeting more than 30 times between 1815 and 1878 to settle common issues and coordinate their actions, these same powers had also set practices and principles such as multilateral consultation, collective security, and special status for powerful countries that are still influential in the UN system today (Mingst and Karns, 2012:19). Third, the origins of the UN system can be also traced to The Hague Conferences, a pair of international meetings that were held in 1899 and 1907. Finally, the League of Nations, established  after the end of World War I, had a huge impact on the creation of the UN.