Before revision: When Italy decided to part from the Triple Alliance, both Austria-Hungary and Germany were alone, for the most part (though Bulgaria and the Ottoman Empire joined Austria-Hungary and Germany , forming the Central Powers) in Europe and surrounded by the Allied Powers.
After revision: When Italy decided to part from the Triple Alliance, both Austria-Hungary and Germany were alone, for the most part (though Bulgaria and the Ottoman Empire joined Austria-Hungary and Germany to form the Central Powers) in Europe and surrounded by the Allied Powers.