In 1918 Woodrow Wilson proposed this numbered set of principles, one being the removal of trade barriers between nations
The removal, so far as possible, of all economic barriers and the establishment of 
an equality of trade conditions among all the nations consenting to the peace and
... [DOC] [TLE] Interpretation of President Wilson's Fourteen Points [PAR] The removal, so far as possible, of all economic barriers and the establishment of 
an equality of trade conditions among all the nations consenting to the peace and 
... that under the principles of the peace proposed, conquest gives her enemies 
.... themselves set and determined for the government of their relations with one... [DOC] [TLE] Fourteen Points - Wikipedia [PAR] Wilson also made proposals that would ensure world peace in the future.