It must be approved! Hope this helps!
Answer:
[C] People had different food and cultures
Explanation:
Isolation wasn't a factor of why Native Americans didn't unite but their tradition and culture. In fact many Native Americans had wars with each other. Alot of Native Americans had language barriers because they spoke differently in various dialects. This disadvantage caused great suffering for their survival as whole people who were originally there at first. The British then later converting to americans greatly divided and conquered the entire continent of the northern hemisphere, which is middle part of north America. The Young nation soonly to become the united states isolated themselves and their problems in order to create their own nation. Isolation soonly started once the United states reached from coast to coast having all in their hands to control. Manifest Destiny
Actually the real answer is the second and first world war pouring money into the us economy for output. If that is not an option it would be the invention of the steam engine and the 1800's locomotive industry.
