Final answer:
The most important gift a lord could give to a vassal was land in the feudal system.
Step-by-step explanation:
The most important gift a lord could give to a vassal was land. In the feudal system, lords offered land-grants called fiefs to their vassals in return for their loyalty and support in war. This land allowed vassals to extract wealth from the peasants who lived on it, enabling them to afford horses, armor, and weapons.