4. Handicrafts - manufacture - trade
The production of tools and vessels created a new environment of artefacts and specialised craftsmen who served the increasing demands of the human group. When circumstances allow, humans move on to surplus production. This is traded for other products which are locally unavailable or which the group cannot make for themselves. This is the beginning of trade and commerce, storage and counting.
These facilitate trade, a factor which is particularly beneficial to the producer and the middleman, and imposes the need for various means of transport for people and products. Contacts are simultaneously created between different social groups. Trade facilitates cultural expansion and influences.
6. Customs and traditions
These are the primeval expressions of the social organisation of human groups, providing greater cohesion among members and a form of psychological support against direct or indirect threats.
7. Social organisation
This is imposed from the level of the immediate family to that of the whole group or groups (races, nations). It includes legislation and control of the operation of all the previous sections, as well as new fields derived from the Social Organisation section, including art, justice, religion, property and war.