Are you suggesting that architectural styles are not based on interactions with different peoples and that the type of architecture, for example, from 200-500CE is not going to vary greatly in different regions such as East Asia and Europe? And that those peoples with individual cultures and ideas about architecture won’t ever interact with their neighbors, creating cross-cultural styles? That these cultures will never interact and reach a quorum on specific styles of buildings, especially when brought together through larger institutions such as religion?