What was the purpose of the byzantine knight?

Knights while being potential players in aristocratic/feudal systems were also a potent military force. While they fought dismounted often enough, they are mostly associated with heavy cavalry. The Byzantines had Kataphraktoi which were extremely armored cavalry that they had fielded for centuries.

Knights - to defend Christianity (its believers and holy places), follow the principles of chivalry and gain material wealth in this life and special favour in the next one. The Byzantine Empire The Byzantine Empire had long been in control of Jerusalem and other sites holy to Christians but, in the latter decades of the 11th century CE, they lost them dramatically to the Seljuks, a Turkish tribe of the steppe.

Explanation:

the answers are excess supply, and fall

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