What was the byzantine empires most lasting contribution to the worlds architecture

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939

answer: the risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: