Final answer:
British culture's dominance is evident through the introduction of English language instruction, assimilation into British customs, and the military-like operation of schools.
Step-by-step explanation:
From the memoir, the detail that suggests British culture is dominant within the school is the introduction of Western schooling with English as the language of instruction, instead of the indigenous or previously favored languages. The curriculum and environment imposed by the British aimed to assimilate children into British ways of thinking, behaving, and believing, indicating a clear push for cultural imperialism. The schools' operations reflected militaristic discipline, teaching British religious beliefs, history, culture, and practices, while disparaging indigenous traditions. Combined with the presence of physical symbols of British dominance, such as children being made to wear flannel shoes instead of their traditional barefoot attire, and the adoption of British customs, these factors contributed to the dominance of British culture.