1. Why did some groups in South America continue to live as nomads after the development of agriculture?

Some groups in South America continued to live as nomads after the development of agriculture because they may have found that their traditional way of life provided them with more freedom and flexibility. Additionally, some nomadic groups were able to sustain themselves through hunting and gathering practices, or by moving seasonally to take advantage of different food sources. They may have also chosen to remain nomadic due to cultural or social reasons, preserving their traditional lifestyle and beliefs despite the availability of settled agriculture.