Final answer:
Post-WWII economic growth, increased disposable income, and paid vacations boosted tourism in Europe.
Step-by-step explanation:
Growth in tourism in Europe after 1945 was catalyzed by increased disposable income and leisure time. After WWII, Western European countries experienced significant economic growth and development. A combination of technology advancements, government funding, and a burgeoning consumer culture contributed to a higher standard of living. Countries like Spain, Italy, and France witnessed a significant rise in tourism, partly due to their improved economies and infrastructure.
This economic revival, together with policies promoting paid vacations, allowed more Europeans to travel for leisure, thus boosting the tourism industry.