The First World War destroyed Germany. By 1918, Germany was no longer a strong confident country, but one on the brink of ruin. The war had destroyed Germany's economy. The country spent around one third of its income on war pensions to all those widows and families who had lost someone during the conflict
If this is ww1, the war had extremely drastic effects on Germany, especially the economy. Following the armistice Germany was forced to pay extremely high reparations for the war. They fell into a deep economic depression, not dissimilar to the one we went through in the 1920's. Massive amounts of people were unemployed and money was essentially useless (high inflation). This eventually helped lead to Hitler gaining power, as he picked at these areas to get people to like him (i.e he promised to solve problems of unemployment, things like that). This all would lead into ww2 :( I included some pictures I remember my teacher showing me about the money problems in Germany, just because they are interesting. You can cross image search if you want more info on the pics.
This is mostly stuff about the economy, I'm sure you can make an argument about how Hitler radicalized anti-semitism in Germany as well, I'm just not as well versed in that.