While the european allied countries did not have to pay reparations like germany they did suffer economically because of

decline in overall birth rate

destruction of infrastructure

inability to produce farm equipment

The right answer is Destruction of infrastructure. Even winning the WWII the European Allied countries, struggled to recover from the horrific devastation of the war. Very few Europeans towns and cities, of any size, had survived the entire war unscathed. The overall aftermath of the WWII to Europe, was a prospect of misery and desolation. Western Europe had most of its transportation and communication seriously disrupted, railway locomotives, roads, bridges had been blown up.

probally   a few days after there called