The Convention enters into force
Three years after adoption the Convention took legal effect on receipt of the twentieth ratification. From this point the obligations — to identify, protect, conserve and transmit heritage on one's own territory, and to assist other States Parties on request — became binding on those who had ratified.
Historical — it happened, and the record is settled.
Subjects
- Convention Concerning the Protection of the World Cultural and Natural Heritage (1972) · treaty · Global · not located
Evidence
Partly verified — Core facts are sourced; some optional detail is deliberately absent.
Convention Concerning the Protection of the World Cultural and Natural Heritage
Establishes the World Heritage List, the List of World Heritage in Danger, the 21-member World Heritage Committee, the World Heritage Fund, and names ICCROM, ICOMOS and IUCN as advisory bodies; asserts a duty on the international community as a whole to co-operate in protecting heritage of outstanding universal value while leaving sovereignty with the State Party.
UNESCO General Conference, 17th session, Paris · 1972-11-16 · Partly verified
https://whc.unesco.org/en/conventiontext/ — UNESCO World Heritage Centre, authoritative text of the 1972 Convention (adopted 16 November 1972; entered into force 17 December 1975)
Recorded on Convention Concerning the Protection of the World Cultural and Natural Heritage (1972)
Related
Related because they share a subject in the Atlas — never because the text looks similar.