On which point did all European powers agree

Answer 1

It is difficult to pinpoint a specific point on which all European powers agreed, as European powers have historically held various perspectives and differences in opinions on different issues. However, during certain periods, European powers have been able to come to agreements on specific matters. One example is the Treaty of Versailles, signed at the end of World War I in 1919, which all European powers, as well as other major countries, agreed to in order to establish peace and determine the conditions of the post-war world.