In addition, in some countries (including the United States and, for certain purposes, the United Kingdom) government works are defined by law as being in the public domain (not protected by copyright) from the moment of their creation. Thus, differences in how national copyright laws define the duration of copyright and list the categories of works protected, result in different definitions of the public domain on a country-by-country basis. In Europe, the Europeana Connect project has developed a helpful Public Domain Calculation tool.
