Answer:
There are many cultures around the world and they have various social systems that have a very strong influence on the way human being are meant to relate with one another.
These social systems can sometimes be positive but are mostly negative because they can hinder human relationships by preventing people from different levels in a social system from relating.
For instance, in India, the Caste system has a strong influence on on who to relate with especially in terms of people outside one's caste. This is especially true for people in rural areas.
Social systems can also impart on relationships based on factors like culture, race and religion.