Title: Indigenous peoples of the Americas.
Question: How many years may the isolation of the peoples in Beringia lasted?

Title: Gothic architecture.
Question: What is the name of the university building in Bologna, built in the 14th and 15th centuries?

Title: Adolescence.
Question: A thorough understanding of adolescence in society depends on what?

Title: Buddhism.
Question:
What eradicates the defilements completely?