If one royal persons officially makes all the decisions in a nation, that government is called a(n)

A Monarchy or a Dictatorship.

Explanation:

A Monarch(Depending on the type of Monarchy) may make the rules, however, the people make question it civilly, and in certain cases it make have to be passed through said nations legislative branch. However, with a Dictatorship, anything the ruler says goes. No one gets a say in otherwise, or they in most cases will be silenced quickly and forcefully. However, to answer your question, it's most likely a Monarchy, due to the questions basis.

a punishment or the threat of punishment used to enforce conformity. enforcement of norms or shared rules of conduct that tell people how to act in specific situations. social control. not everyone internalizes all of society's norms, and some people must be motivated by self-fulfillment.

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.