The introduction of the "four field rotation" in agriculture had what effect on the industrial revolution?

Production of more food--the system allowed for more food to be produced which fed the workers in an industrial economy. 

The 'four-field system' rotates crops between the 4 fields no longer needing to keep one empty because one of the crops would replenish the field with nutrients while the others take nutrients away from the fields. 

They can ask questions and they deserve a answer and they can make stories about whatever is going on in the white house