The documents that may require legalization or apostille can vary depending on the country where you intend to use them. However, in general, the documents that may need legalization or apostille include:

I. Personal Documents:

a) Birth certificates
b) Marriage certificates
c) Divorce certificates
d) Death certificates
e) Citizenship certificates

II. Educational Documents:

a) University diplomas
b) School certificates
c) Academic transcripts
d) Postgraduate study diplomas

III. Identity and Citizenship Documents:

a) Passports
b) Identity cards
c) Residence certificates

IV. Business and Legal Documents:

a) Commercial contracts
b) Company incorporation documents
c) Powers of attorney

The process of legalization or apostille may involve authenticating the documents at the national level as well as obtaining an apostille or other forms of international legalization, depending on the receiving country. It is important to check the specific requirements of the country where you intend to use the documents and follow the appropriate procedures to legalize or apostille them correctly.