Many cultures exist around the world.  That is, a particular people or society develop their ideas, customs and social behavior which apply to the group as a whole.

The behavior associated with the cultural norms likely derives from many factors,  both environment and genetic.  That is the temperment of a people can be bred, learned or a combination of both.

Human Inhumanity to Human

One key aspect of culture is how people interract with others .  From politeness to predudicial brutality unfortunately the societal norms do always lead to equal treatment for all.

Like typical animal behavior, observed in many species, the pack mentalty applies.  The larger pack (the in group) can treat the minorities with distain and even worse.

How Culture Develops

Cultural develops and changes over time with the group psyche.  This is influenced by historical events (e.g. war and and famine), geography ( e.g., nearness to others,  natural bordr protection, isolation).

Population density, weather, availability and type of food are among the many other things that drive cultural development.

For Example

I have visited Japan often and can cite my observations as to drivers of their cultural development.  First, isolation (it’s a collection of islands) has led to self reliance and associated operational efficiencies.

The population density (the islands are full of people) has led to an extreme politeness and powerful national pride.  Being a Japaness citizen is an honor, dual citizenship is not allowed.  Who would want to be be anything else?

Earthquakes and typhoons occur often and has led to a very resilient culture.

Culture is real and very powerful and as a whole people of specific regions adhere to the values and behavioral norms passed on historically, changing with time as the historical events and geographic isolation morphs.