Animal research has revealed a general reward system that triggers the release of the neurotransmitter.

Dopamine

Explanation:

Dopamine is a type of neurotransmitter. It is made by the brain and used in the brain in the nervous system by nerve cells. It is also called a chemical mass-anger. Dopamine is a neurotransmitter that helps us to understand how we feel happiness. It is a unique ability. It helps us in thinking, planning, focus and to find the things interesting.  

Many parts affected by dopamine such as:

the magna carta is a peace treaty between the king and the rebels. it was made because the the barons captured london in may 1215, so the king was forced to make a treaty with them.the document is written in latin.

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