Rubuta wani ɗan gajeren sakin layi na labari da aka ba da batun da ke gaba:  Mutum X ya bayyana wasu tarihin
Tabbas, ga ɗan gajeren sakin layi: Mutanen farko da suka zauna a Arewacin Amurka sun kasance masu farauta da masu tattarawa waɗanda suka yi ƙaura daga Siberia a lokacin ƙanƙara na ƙarshe, kimanin shekaru 12,000 da suka wuce. Wadannan Paleo-Indiyawa da sauri suka bazu ko'ina cikin Amurkawa, suna zaune a kowane kusurwa na nahiyar.