Answer:
Severe decrease in morale
Explanation:
the viet were able to swiftly and effectively dessimate US and South Vietnamese troops leading to a lack of confidence and optimism.
Besides geography, the major issue that would have made this impossible is that each "country" or state in South America was dominated by a different ruler, many of whom had fought of the Spanish--meaning that they would have never united under one title. Their cultures were also wildly different.
A buffer colony - like Georgia, for example - was founded because colonists wanted a "buffer zone" (any area that serves the purpose of keeping two or more other areas distant from one another.) between the British colonies and other settlements. Georgia, specifically, was founded to protect South Carolina against attack by the Spanish, the french and the Indians.
I hope this is useful.
^^
