Anthony:
I must concur with Tom about the influence of equipment in construction and maintenance in the history of architecture. Older courses certainly have the advantages of natural growth and settling, constant tinkering over the years, etc. Also, the fact that many poor old courses have been filtered out, filled in, or dozed under over the years allows the 'Old cream' to encounter fewer challenges as it rises to the top.
Another issue of importance, in my opinion, is the migration of Scottish professionals, bringing golf and good architectural precedence to all ends of the earth. Also, the tendency for aspiring architects, starting with MacDonald, and continuing through to RTJ, Dye, Doak, Hanse, et al. to actually visit the great courses and transport ideas and modified concepts from them to create better golf courses must be considered.
Other evolutionary subjects to touch upon could include the history of blindness and golf shots, the changes in safety and environmental standards, the availability of great golfing property, the economics of the game, club and ball changes, and the disappearance of the ground game to a large extent on newer developments (with obvious exceptions).
Good Luck...its only your graduation depending on it, I suppose
CWH