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.
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I have no clue </h2>
here is my favorite songs by Ed sheeran
They learned to plant crops. What were the most well known structures in Mayan cities?
To advise the President on any subject he may require relating to the duties of each member's respective office.