听听AI怎么说：Yes, the Weimar Republic (1918–1933) was

a liberal democratic republic in Germany that replaced the country's constitutional monarchy after World War I and the November Revolution of 1918. The Weimar Constitution established a parliamentary democracy that divided power into three branches of government and included many democratic features:...

你可以 search "is weimar republic democracy". 是希特勒上台改变了这个体制。