Depending on its source, such a file usually contains one of the following:
Detailed guides and modding documentation are available on the EU4 Wiki and the Paradox Interactive Forums . File: Europa.Universalis.zip ...
Community-created content (mods) are often distributed in .zip format. These must be placed in specific directories—usually Documents/Paradox Interactive/Europa Universalis IV/mod/ on Windows—to function correctly. Depending on its source, such a file usually