Based on the given line above which is Rome was developing a "soft belly" beginning in the 3rd century, this means that the Romans became lazy. On the other hand, "soft belly" also means having a harsh time or problems. During this time, The Romans become lazy and that was one of the reasons for the fall of Rome.
Agriculture was the main occupation & economic activity in the ancient Mesopotamia civilisation. They focused on the cereal cultivation & sheep farming, however also farmed legumes, date palms and grapes.