What did the greeks do to counteract the fact that the columns of their buildings did not appear to have uniform width from top to bottom?

this is a good question! i'll do some research and come back when i have the answer!

the exodus of these people from constantinople contributed to the revival of greek and roman studies, which led to the development of the renaissance in humanism and science. byzantine emigrants also brought to western europe the better preserved and accumulated knowledge of their own greek civilization