Causes of WWII. The Treaty of VersaillesGermany blamed for warGermany had to pay reparationsGermany stripped of territory. Causes of WWII. The Treaty of VersaillesRussia stripped of territoryNew democracies not prepared Weak League of Nations. Causes of WWII. The Treaty of VersaillesDid not help Europe: depression, debts, hunger Led to rise of totalitarian dictators .