Final answer:
The last two continents to be settled by humans were North and South America, with the initial migration from Asia across Beringia occurring between 20,000 and 10,000 BCE.
Step-by-step explanation:
Human Settlement of Continents
The last two continents to be settled by human populations were North and South America. Migrating out of Africa, our ancestors first settled parts of Europe, Asia, and Australia. Archaeological findings indicate that modern humans may have been present in the Americas between 20,000 and 10,000 BCE. These first Americans likely arrived from Asia, moving across the land bridge known as Beringia into Alaska during the last ice age. They continued to spread throughout North and South America, adapting to diverse environments and establishing complex societies.
The presence of humans in the Americas is believed to be much more recent compared to their long history in Africa and Eurasia, where the earliest archeological evidence of Homo sapiens originates. This contrast in settlement history highlights the dynamic nature of human migration and the continuous uncovering of new scientific evidence that reshapes our understanding of the past.