The pressure from lineage heads ensure social control in acephalous or non centralized societies because the oldest men ensures that there is control in their family units.
What is an acephalous society?
The acephalous is formed from Greek ἀκέφαλος "headless" and refers to the type of society that lacks a political leaders or hierarchies and such groups are also known as non stratified or centralized societies.
In the society, the lineage heads means the individuals who are the oldest male of the oldest branch of the lineage.
These lineage heads does induce pressure to ensure social control in acephalous or non centralized societies through their influence of being the head in each family units.
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