Complex sentence: The League of Nations Union (LNU) was an organization formed in October 1918 in the United Kingdom to promote international justice, collective security and a permanent peace between nations based upon the ideals of the League of Nations.
Split into simpler sentences: The League of Nations Union (LNU) was an organization formed in October 1918 in the United Kingdom to promote international justice. It formed in October 1918 to promote international justice, collective security and a permanent peace between nations based upon the ideals of the League of Nations.