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. <span />
They do this because back then, a lot of things happened in ancient Greece. So because so many things happen, they have to carefully study the events and place them in a category or order in order to make sense.<span />
