Use quotations to support your arguments. Do not use quotation marks in block quotes unless it is a quote within a quote. Taylor argues that the basis of societal organization in traditional Vietnam was found in its unique conception of kingship, which grew out of peasant life and village politics. To an administration faced with the possibility of losing more countries to communism, Vietnam was to become not just a showcase . . John King Fairbank.
Verbs HAS to agree with their subjects.
Prepositions are not words to end sentences with. And don't start a sentence with a conjunction. It is wrong to ever split an infinitive. Avoid cliches like the plague. Also, always avoid annoying alliteration.