The collapse of the roman empire most likely empower the catholic church because

Many Europeans were trying to find the way that kept them united

Explanation:

Catholic religion became the ideology that kept the society of that time as one, with the fall of the Roman empire many people migrated from the urban areas to the rural ones, due to this education suffered a major change, and it started to decline. Catholic church took many functions that the government used to have  and this obviously also helped to its expansion.

he 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: