How did the discovery and study of Kennewick Man affect previously held ideas about migration to the Americas?

The discovery and study of Kennewick Man, a 9,000-year-old skeleton found in Washington state, significantly challenged previously held notions about the timing and methods of human migration to the Americas. Initially, the prevailing belief was that the first inhabitants arrived via a single wave of migration across the Bering Land Bridge around 13,000 years ago. However, Kennewick Man's age and skeletal features suggested a more complex picture, indicating that multiple migration waves may have occurred and that early inhabitants had diverse origins. This discovery prompted a reevaluation of the timeline and patterns of human settlement in the Americas.