The event that significantly contributed to the rise of the Nazi Party in Germany was the economic turmoil following World War I. The Treaty of Versailles imposed heavy reparations on Germany, leading to hyperinflation and massive unemployment. This created widespread discontent among the populace, who felt humiliated and betrayed. Adolf Hitler and the Nazi Party exploited these grievances by promoting nationalist and anti-Semitic rhetoric, promising to restore Germany's former glory. The Great Depression further exacerbated economic instability, allowing the Nazis to gain popular support, ultimately leading to Hitler's appointment as Chancellor in 1933.