Falafel spread around the same time to which former British-administered territory?

Falafel spread around the same time to Mandatory Palestine.

Falafel began spreading beyond Egypt after World War I, and around that period it reached Mandatory Palestine, the territory administered under the British Mandate from 1920 until 1948. The dish was adopted by some Jewish and Arab communities there, although many recent Ashkenazi Jewish immigrants initially regarded it as unfamiliar or foreign.

The local version also reflected regional cooking traditions. In Egypt, falafel is generally made from fava beans; in the Levant, including Palestine, chickpeas became the more typical base. The food’s low cost, portability, and compatibility with pita helped it develop into a prominent street food.

Mandatory Palestine is a historical political name, not a modern country name. That distinction explains why the answer is not simply “Palestine” in this question’s wording and why the other British-administered territories listed are incorrect. A 1939 Palestine Post report is an early documented reference to falafel served in pita as street food, while its popularity in Israel expanded further after independence and the 1949 rationing period.