Original: The Montevideo Convention on the Rights and Duties of States was a treaty (which was later accepted as part of customary international law) signed at Montevideo, Uruguay, on December 26, 1933, during the Seventh International Conference of American States.
Simplified: The Montevideo Convention on the Rights and Duties of States is a treaty. The treaty was signed at Montevideo, Uruguay, on December 26, 1933, at the Seventh International Conference of American States.