Which pact stated the unified hope for world peace and outlawed aggressive actions and war?

The Kellogg-Briand Pact (or Pact of Paris, officially General Treaty for Renunciation of War as an Instrument of National Policy[1]) was a 1928 international agreement in which signatory states promised not to use war to resolve "disputes or conflicts of whatever nature or of whatever origin they may be, which may arise among them".[2] Parties failing to abide by this promise "should be denied of the benefits furnished by this treaty". It was signed by Germany, France and the United States on August 27, 1928, and by most other nations soon after. Sponsored by France and the U. S., the Pact renounced the use of war and called for the peaceful settlement of disputes.

Your answer would be the League of nations