Conversation so far:
who first propounded the principle of unity of command
Unity of Command is one of Henri Fayol's principles of Management.
What is the meaning behind the principle of Unity of Command
The Unity of Command principle states that there must be only one superior to a subordinate.
What is the main benefit of the Unity of Command principle
Unity of Command helps to develop a clear and better relationship among superior and subordinates.

Question: How many other principles
Self-contained rewrite: How many other principles are included In Henri Fayol's Principles of Management