"The villagers started to cultivate barley, wheat and legumes"Oh, sure... they just "started" to farm. I read a study that concluded it takes 200-300 years for a wheat field to be transformed from wild to domesticated plants. If so, it means two things:
That study about wild-to-domestic doesn’t indicate what you seem to think it means, although they already had the skills. The earliest known sample of multirow (domesticated) barley RC dated at 14K old.
Learning the consequences of seed-scattering requires fixed habitation for a matter of mere months — scattering after the maturation, and new germination at the beginning of the next growing season.
The need for water for human life must have been known for a long time, or the whole outfit would have gone under after three days without it.
Agriculture led to fixed domiciles. Raids by those who hadn’t figured it out yet led to concentration of settlements, collective defense, standing armies, political systems, accounting practices and recordkeeping (for maintaining property claims and water rights, as well as taxes), writing systems, ceramic arts, etc, not necessarily in that order.
Trade has probably always been around, and not just for the world’s oldest profession.