What is the oldest written source in this country that mentions this right?

Panama

Freedom of association is protected under the first constitution of Panama, enacted in 1904 shortly after the country’s independence. Article 20 guarantees Panamanians’ right to “to form associations for all the legitimate purposes of life.”

Comparative Constitutions Project. “Constitution of the Republic of Panama.” World Constitutions Illustrated, July 24, 2023, https://heinonline-org.ccl.idm.oclc.org/HOL/Page?collection=cow&handle=hein.cow/zzpa0048&id=1&men_tab=srchresults.

Freedom of Association · Country sources (all rights) · Last edited 2023-10-11 · Edit on GitHub