File:Constitution of Burma (1947).pdf

This work formerly was copyrighted in Myanmar but is now in the public domain because its term of copyright has expired (details). According to the Law No. 15/2019 of May 24, 2019 of Myanmar (English translation from the Myanmar Law Information System):

1. This is an audio-visual and cinematographic work, and 50 years have passed since the year of its creation (that is, the work was made before 1974)
2. This is an anonymous or pseudonymous work, and 50 years have passed since the year of its creation or publication (that is, the relevant action was done before 1974)
3. This is a work of the government and 50 years have passed since the date when the work was published or first made available to public (that is, the relevant action was done before 1974)
4. This is a work of applied art and 25 years have passed since the year of its creation (that is, the work was made before 1999)
5. This is another kind of work, and 50 years have passed since the year of the author's death or last-surviving author's death (that is, the death occurred before 1974)

This work is in the public domain in the U.S. because it is an edict of a government, local or foreign. See § 313.6(C)(2) of the Compendium of U.S. Copyright Office Practices, 3rd ed. 2014 (Compendium (Third)). Such documents include "legislative enactments, judicial decisions, administrative rulings, public ordinances, or similar types of official legal materials." These do not include works first published by the United Nations or any of its specialized agencies, or by the Organization of American States. See Compendium (Third) § 313.6(C)(2) and 17 U.S.C. § 104(b)(5).

A non-American governmental edict may still be copyrighted outside the U.S. Similarly, the above U.S. Copyright Office Practice does not prevent U.S. states or localities from holding copyright abroad, depending on foreign copyright laws and regulations.