What factors contributed to the decline of the Byzantine empire? Select three correct answers
1. Constant invasions by various groups including the Seljuk Turks, Bulgars, and Crusaders weakened the Byzantine Empire's military strength and resources.
2. Economic instability and financial mismanagement, including high taxes and corruption, led to a decline in the empire's wealth and ability to support its infrastructure and military.
3. The Fourth Crusade in 1204, during which the Crusaders looted and sacked Constantinople, severely weakened the Byzantine Empire both economically and politically, leading to a fragmentation of its territories.