In number the stars what items were being rationed and why?

In "Number the Stars" by Lois Lowry, items such as food, clothing, and fuel were being rationed during the Nazi occupation of Denmark in World War II. The Danish government implemented these restrictions to ensure that resources were conserved for the war effort and to prevent shortages among the population. Rationing also aimed to limit the availability of supplies to the occupying forces. This created a challenging environment for the characters, who had to navigate scarcity while protecting their loved ones.