Each country has its own culture as each person has his/her own religion. Belief system of a person or a society is the set of beliefs that they have about what things are right, wrong and what things are true, false. The personal beliefs of us play a small part in each religion, which it points out the special of it that no others can have. Religion is certainly a type of belief system, but not all belief systems are religion.
Each individual person has different types of belief system, hence, the ways their behaviors are and the ways they act are different. But when that individual person join in a specific religion, he/she needs to follow all typical laws or rules that that religion has made and created.
For society: a group of people that has the same belief system will have the same acts together, forming a basic standard for that society. Due to different religion, that group of people will have different ways of solving problems. For example: when there is a disadvantage as a difficult circumstance, the Buddhists will organize a donated campaign where people can help each other to bring up the society, making it more and more better. Last but not least, things usually go the way it decided to go and so sometimes we become conscious with everything around us. Along the journey of life, we will be able to find out what and where we want to become. Hence, belief system is an actual set of precepts, which our daily gives us words, actions and thoughts in life.
Belief system can refer to 
A religion- the belief in and worship of a god or gods, or a set of beliefs concerning the origin and purpose of the universe.
A philosophy - a personal outlook our viewpoint.
An ideology – a set of idea that constitutes one’s goal, expectation and actions. It is a way of looking at things and theorizes of a visionary or impractical nature.  Global/ International Perspective
Depend on each region, each area, each