I'm curious to know what populist/nationalist movements were causing unrest and civil wars in the late 19th century - a time which my grandmother, who could remember the last vestiges of it (being quite ancient by the time she died) said was a period of the most peace and prosperity people in that region (the Austro-Hungarian empire) could remember.  Victorian Britain 'ruled the waves', the New World was booming, and so forth.  

While there was much poverty, the world seemed set on a course that would improve all that - before World War I hit.  And there were also some terrorists, mostly in Russia and the Balkans, inspired by Marxism and anarchism.  But where was the populism? The nationalism? 

The biggest threat to world peace until the Nazix were in fact the Communists who arose after WWI and the European nations were right to be alarmed. 

Anyway, this article left a LOT out to make a skewed point.  You don't have to use 'false facts' to tell untruths.