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(Only responding in pedant mode because “I presume you know” is so…malodorous. Don’t throw stones in glass houses.)
What does that mean, exactly?
Not only Northeast Asia. Africans migrated to the Americas directly via the Atlantic and indirectly via the Pacific long before Columbus.
The Western anthropological narrative of migration for these peoples is just another story, only valid within its own limited world-view. The relevance of anthropological evidence in engaging Native worldviews continues to be an important point of discussion in some (drum) circles.