Complex sentence: Jacob Svetoslav's continuing ties to his Russian homeland are evidenced by his request to the Bulgarian patriarch for the making of a copy of the Nomocanon, to be sent to Cyril III, the Metropolitan of Kiev.
Split into simpler sentences: Jacob Svetoslav's continuing ties to his Russian homeland are evidenced by his request to the Bulgarian patriarch. Jacob requested the making of a copy of the Nomocanon which was then sent to Cyril III, the Metropolitan of Kiev.