Why did the byzantine empire last longer than the western roman empire

There were several reasons the Byzantine Empire lasted longer than the Western Roman Empire:

Constaninople was the new seat of the Roman Empire, it was challenging to conquer them.

The location made Constaninople tough to attack, and people could receive supplies by sea.

The Golden Horn served as an excellent place for shelter.

The Theodosian Wall made it difficult to attack.

The Vikings and the Byzantines signed a treaty.

Varangian Guard's role was to keep the Empire unharmed.

They had superior weaponry and diplomacy.

Constantine's religious beliefs.

Bystantine's well-managed business abilities.

Explanation:

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:

answer:

it caused mass african migration, african populations to grow, african empires to topple, and racism against slaves to emerge.