What is meant by the rule of law? why it is considered as the foundation of democracy?

According to my knowledge this is the

Rule of law is one of the most important pillar of Constitution.

Rule of Law is something which opposes common man's rule and supports Government's rule. This is actually necessary for maintaining peace and stability in democratic countries like India.

a.indigo and cochineal

b.animal hides

c.silver and gold

e.cacao beans and sugarcane