Complex sentence: Frankalmoin fell into disuse because on any alienation of the land the tenure was converted into socage, and no fresh grants in frankalmoin, save by the Crown, were possible after Quia Emptores in 1290.
Split into simpler sentences: Frankalmoin fell into disuse because on any alienation of the land the tenure was converted into socage. No fresh grants in frankalmoin, save by the Crown, were possible after Quia Emptores in 1290.