All of the Following Technological Innovations Increased European Agricultural Productivity

Multiple Choice

All of the following technological innovations increased European agricultural productivity in the Middle Ages EXCEPT

A) a new heavy plow.
B) introduction of the horseshoe and horse collar.
C) the three-field system of sowing.
D) introduction of oxen for pulling plows.
E) the widening use of the water mill and the introduction of the windmill. ​