Von Thunen is famous from the 19th Century. He made a model that showed how market processes how to use the land in various locations.
I hope this helps!
1. Motivation
2. Reprimand
3. Constructive Criticism
4. Hygiene
5. Sanitation
6. Dysentery
7. Purified
8. Disinfect
9. Accountability
10. Delegate
11. Morale
12. Persuade
13. Authority
14. Dealership
15. Discipline
16. Galvanized
17. Scholarship
18. Telling
19. Single
20. Consulting
The answer to your question is "Participant o6servation".
