Final answer:
Great Britain's post-WWI economy was marred by a large national debt and labor shortages, both of which were direct consequences of the war effort and its high human and financial costs.
Step-by-step explanation:
After World War I, Great Britain's economy experienced stagnation due to several key factors. The most significant contributors to this period of economic difficulty were the large national debt and the labor shortages caused by the loss of a large number of men during the war.
Furthermore, tensions between workers and employers over low wages led to loss of productivity due to strikes, and the difficulty in transitioning factories from war to peacetime production also stymied economic growth.