How can we tell that Mississippian people were eating more maize than people that came before them?

Question

Quizplus · Accepted Answer

Elevated levels of 13C in bones can indicate a diet high in maize, as the plant has a distinct carbon isotope signature. Poor dental health is also a common sign of a high carbohydrate diet, due to increased dental decay from sugars. The other choices do not specifically point to an increase in maize consumption.

How Can We Tell That Mississippian People Were Eating More