How did the demilitarisation of the Rhineland increase criticism of the Weimar Republic?

Correct answer: It was seen as a loss of national security and dignity under the Treaty of Versailles

The Treaty of Versailles (1919) required the Rhineland to remain demilitarised. Many Germans saw this restriction as a threat to national security and a humiliating loss of sovereignty, and critics blamed the Weimar government for accepting the treaty.