The fight-or-flight response, also known as the acute stress response, refers to a physiological reaction that occurs in the presence of something that is terrifying, either mentally or physically. The response is triggered by the release of hormones that prepare your body to either stay and deal with a threat or to run away to safety.
The term 'fight-or-flight' represents the choices that our ancient ancestors had when faced with a danger in their environment. They could either fight or flee. In either case, the physiological and psychological response to stress prepares the body to react to the danger.
Answer:
Feudalism
Explanation:
The system defining hierarchical system based on land ownership, protection & mutual obligation : is called as Feudalism.
It emerged in ancient history of Europe.
It consists of nobility class (land owners), known as 'lords'. They recompense knights, vessels & serfs - by granting them piece of land (called fiefdoms) return of which the latter fight for the former.
I think the best word for it is "junta".
This word comes from Spanish for juntar (bring together). In English, it is used to mean a military group of people ruling a country as a dictatorship.