What was found at igbo ukwu?
a.
evidence for copper alloy or bronze casting in sub saharan africa.
b.
thousands of figures which were polished, covered with a red clay slip, and fired at low temperatures.
c.
examples of textiles which employed a special technique that resembles velour to the touch.
d.
crosses, crucifixes, and other christian emblems had been created as early as the late fifteenth century.