The Weimar Republic formed in the town of Weimar by the National Assembly.
Step-by-step explanation:
After the First World War, Germany faced enormous problems in the economic and a large countries population was killed. In order to create new parliamentary laws elections were held up for the National Assembly in December 1918.
On 6th February 1919, The assembly officially met in the Weimar town and thus the Weimar Republic was formed. The Weimar Republic's founders were Jews, war profiteers, liberals, and socialists. To their republic, the Social democratic party's Friedrich Ebert was elected as the president.