How did the First World War affect the internal state of the belligerent countries

How did the First World War affect the internal state of the belligerent countries, the development of military technology?

Any war stimulates the development of an industry that produces weapons, uniforms, and ammunition. New technologies, tactics and strategies are required for successful warfare. But the consequences are very often sad. Germany was forced to sign the humiliating Treaty of Versailles. According to the agreement, she lost part of her territories, all foreign colonies, was obliged to pay an astronomical amount of indemnities and reparations. She was forbidden to have military aircraft and tanks. A terrible crisis and total impoverishment took place in the country. The consequences for Russia were not bright. This war drove the last nail into the coffin of the remnants of the Russian Empire.