I want to say government or farming. Farming because it started a sort of trade and barter system, but government because it created regulations for a village lifestyle? I think it depends on what time period you're studying.
Answer:
Man in the middle attack(MITM)
Explanation:
This a term popular with hackers in computer and cybersecurity fields. The man in the middle attack describes a situation whereby there is an in-between in the perceived private conversation of two persons online. The middle man acts like an intermediary between these two, eavesdropping on each others conversation and controlling it while making it look as though they are having a private cyber conversation.
The answer is Primary (care service).
Explanation:
Primary care is the supplying of a first-line health service. Includes: diagnosis of a health condition, treatment and long-term care for chronic conditions (diabetes, hypertension, etc).
The service provided by Dr. Jones, who is most likely a primary care physician, includes both diagnosis (upper respiratory tract infection) and treatment (the antibiotic prescription and the 10-to-14-day follow-up).
France, Switzerland, and Germany.