Amajority of agriculture in russia is produced by ?

Explain the cause for movement river valley civilization to early industrial centers

(1) which phrase describes an important agricultural change that occurred during the mississippian period? (a) first cultivation of wild grains (b) expansion of marsh elder farming (c) spread of corn agriculture (d) gathering of nuts and berries (2) which group of native americans use northwestern arkansas as it’s traditional hunting grounds? (a) osage (b) quapaw (c) woodland (d) caddo

How does central place theory explain patterns in the size and distribution of cities?