Which term refers to the whole set of feelings about being in an alien setting, and the ensuing reactions?

Answer: Culture Shock

Explanation: Culture Shock may be referred to as the anxiety, distorted, uneasy or uncomfortable feeling experienced by an individual when they find themselves in an unfamiliar terrain. Culture shock may arise when an individual visits or mandated to stay or live within people who have contrasting cultural and social ideology from their own either for work, crisis or other related reasons. Culture shock could result due to reasons such as language barrier, alien religious or cultural traditions, margin of social or technological difference, available cuisine and so on.