AMERICAN MEDICAL ASSOCIATION BECAUSE WHERE DOCTORS
A.economic growth through increased international trade
Well, it depends. Technically all of those answers could SHAPE culture, but language, religion, and government are the best answers. People can still practice their culture despite where they are in the world, after all. So A, B, and C.
I think this would be the Constitution of Massachusetts, created in 1779, approved in 1780. It was actually the first constitution written by a convention and remains the oldest constitution (apart from parts of that of San Marino) still in use.