Part B: Explain the impact of other causes, important events, and significant figures on the Byzantine empire in complete sentences. How did Justinian's actions contribute to the fall of the Byzantine empire? How did invading forces contribute to the fall of the Byzantine empire? What impact did the Macedonian Empire have on the Byzantine empire? How did the Crusades contribute to the fall of the Byzantine empire? How did trade with the Venetians contribute to the fall of the Byzantine empire?