Final answer:
George is guided by the postcolonial theory in his community health nursing practice, which considers the lasting effects of colonial history on current health outcomes.
Step-by-step explanation:
George is working within the theoretical perspective of postcolonial theory in his community health nursing practice. This perspective considers how historical factors, such as colonialization and its suppression of indigenous health practices in favor of biomedicine, have shaped the present health context of a community, recognizing that these historical influences linger and continue to affect health outcomes. Postcolonial theory acknowledges the importance of understanding the colonial past of a group to address the health disparities that exist in the present.