Why was it difficult for large civilizations in Mesoamerica and South America to hold together?(1 point)

choose 1 Response

religious differences that caused disputes within the civilizations
religious differences that caused disputes within the civilizations

weak military
weak military

variations in environment and geography that made travel and communication difficult
variations in environment and geography that made travel and communication difficult

difficulty in growing food
difficulty in growing food

variations in environment and geography that made travel and communication difficult