Which term refers to a medieval knight who received a fief in return for service to a landowning lord?

a.
vassal

b.
peasant

c.
serf

d.
monarch

How did the instition of slavery continue to affect the world even after it was abolished?

Using complete sentences, compare and contrast the leadership and accomplishments of martin luther king, jr. and frederick douglass.

Which distinctive feature of the notre dame cathedral allowed it to accommodate its large stained glass windows? a. its barrel vaults b. its flying buttresses c. its quadrant arches d.its square bays