Final answer:
The creation of the League of Nations after World War I contributed to the feature of international law Article 22 (1919) by promoting collective security and establishing a platform for international cooperation.
Step-by-step explanation:
The creation of the League of Nations as a result of World War I significantly contributed to the establishment of international law, specifically Article 22 (1919). The League of Nations was formed as an international peacekeeping organization to promote collective security and prevent future global conflicts. Member countries of the League agreed to defend each other against military threats, which helped lay the foundation for international cooperation and the development of international law.