Even the Croatians were mixed up in the brutality of the WWII times. The Serbs are still mad just as the Jews are still mad at Germans. The Poles are mad at Germans and Russians. The Ukrainians are "non-existant´" to most Russians. The French/German borders (Alsace areas) have moved several times. The Sweden invasion of Europe to wipe out the Catholics was terrible. The Danish invasion down to even Spain was terrible. The English invasion of France was terrible. The acts of terror from Mussolini and Franco in Italy and Spain still carry bads scars internally there.
As the Austrians were losing the civil war against the Hungarians--they offered and "peace" conference and over 55 of the most brilliant Hungarian generals and military leades...were surrounded, arrested and openly hung. Only now (last year) did the Hungarian State finally exhume them and gave them a real and proper military honors burial in their homeland...not to mention the destruction of the North and South American continents, Australia and the Carribean Sea thru the Portugese/Spanish/French/English invasions there to steal the gold and silver there. MUCH of which is still lost in the oceans and seas on the way home. Stolen again by pirates or the storms at sea...All the way up to the War in Vietnam which was a French Colony that wanted freedom and self-government. France wanted to keep the rubber production and other riches there.
NOTHING GOOD CAME OUT OF EUROPE in the last 500 years- wars, disease, theft, genocide....