The unwritten historical precedents created from everyday social customs rules and practices is what?

The unwritten historical precedents created from everyday social customs, rules, and practices are often referred to as "cultural norms" or "social conventions." These unwritten rules shape behavior and interactions within a society, guiding individuals on what is considered acceptable or appropriate. Over time, these norms can influence laws and formal institutions, reflecting the values and beliefs of the community. They play a crucial role in maintaining social order and cohesion.