Multiple files with different language
Are you looking for field_collection?  


Install and enable the module.
Add a field of type "Field Collection" to your entity type.
Go to admin->structure->Field COllection
Add 2 fields
1 field is of file type
2 field is either select box with countries or can be taxonomy reference field 


Now while creating the content, you will have option to upload a file and select a language for it.