Charter: A charter is a written document that outlines the purpose, principles, and rules for an organization. The United Nations Charter serves as its foundational document.
Ratification: Ratification is the formal approval or acceptance of an agreement by a country's government or relevant authority. Member countries had to ratify (approve) the United Nations Charter for it to come into effect.
International Cooperation: International cooperation refers to countries working together towards common goals or addressing shared challenges. The formation of the United Nations aimed to foster greater international cooperation among nations.