AGRICULTURAL AS PRODUCER OF FOOD, ENERGY AND RAW MATERIALS If output in English agriculture increased by only 50% or less from 1700 to 1850, then there was a decline in agricultural production in England per head of population, and this clearly is problematic.
(output in English agriculture; increased; by only 50%) (this; clearly is; problematic)
output in English agriculture this
increased clearly is
by only 50%
problematic