Could someone me with this problem simplify

What is the term for a short statement about history that has not been yet been proved

What characteristics did the kiowa share with the other plains people? a) they migrated from the same places b) they were nomadic hunters c) they used the horse extensively d) they spoke the common language! and you

This photo shows an early mesoamerican structure, specifically from the zapotec culture. what was this structure most likely used for? a. creating terraces for farm fieldsb. practicing religious ceremoniesc. playing a ball game with stone hoopsd. protecting a city from invading armies