I believed, it's because their sense of empathy toward other people.
After accumulating so many wealth, it will come to the point where they no longer feel any satisfaction in simply accumulating it.
Giving their money to help the society on the other hand, give a humanistic satisfaction that they wouldn't be able to get from a mere profit.
I assume your question is why does he have to leave the room before the final discussion?
Well, he might have, as an active member of the IRB, a conflict of interest, meaning that he could be biased to vote in favor of his work which is incorrect, as researchers need to be objective regarding what they are studying. The National Academy Press. (2009). On being a scientist: Responsible conduct in research (3rd ed.). Washington, DC: Author. Is a great book you might read to understand the duties of any IRB and its members responsibilities, also the researchers' behavior. On it, is detail why a conflict of interest can guide to the decision of not conducting a certain research, independently of the undeniable reputation of Dr. Jones.
Answer:
North
Explanation:
Much of the North was industralized and had banned slavery so they believed in a central gov. The south on the other hand was more farming based and they believed in state gov