Native American culture Between the Five Native American cultures, most definitely the most viable one was the Incas. They engaged in agriculture, bringing water down from the Andes by aqueducts which represented a well developed architecture and math knowledge. The Incas also had the cities connected by good roads; they were organized. Also, they lived peacefully and this is another thing that can make them a more viable society, when you don’t fight the enemy but peacefully absorbed them with promises prosperity and peace you get to know other culture, other ways of architecture and learn a lot more. Because of their developed system of life, the Incas were a viable culture.