Fill in the Blanks Origins of feudalismOnline version Complete the words by Fran Colomer 1 vassals money nobles Charlemagne invaders king soldiers fiefdom weak Feudalism was created because after the end of the Empire of the kings were and they could't stop the . They asked the for help . The gave the nobles land ( a ) and power , and the nobles became his : they had to help the king with advice , and .