Final answer:
Indian migration resulted in ethnic enclaves across East and Southern Africa, the Caribbean, and Southeast Asia, largely influenced by colonial demands for labor. True historic alliances with Indian tribes played a crucial role in European imperial expansions in North America.
Step-by-step explanation:
The assertion that migrant ethnic enclaves of Indians are present in East and Southern Africa, the Caribbean, and Southeast Asia is true. Historically, the movement of Indians to these regions was often the result of colonization and the demand for labor. For instance, during the British Empire, large numbers of Indians were brought as indentured laborers to various colonies, including those in Africa, the Caribbean, and parts of Asia.
In regard to the historical relationships between European empires and indigenous peoples, it is also true that alliances with Indian tribes were crucial for establishing control in the southeastern regions of North America. This pattern was not unique to the Southeast, as similar dynamics played out across the Americas, including the Spanish conquest of the Aztecs, where recruiting native allies was of significant importance.