Which two factors explain why Great Britain's economy experienced a period of stagnation after World War I?

The war had resulted in a large national debt, which in turn led to increasing costs and fewer to zero jobs. Many factories and industries were destroyed in aerial bombings, resulting in a downsizing in production. Great Britain was the most booming country in the world before the World War l. However, after the war, the country struggle in a period of sluggishness because of the huge amount of money which was wasted on the war.