Traditions of Giving in Buddhism

I'm preparing an essay which will answer the question,
"Why Buddhism emphasizes so much on sharing (giving?" I would appreciate anyone out here who can give me a kickstarter.

-

when Buddha approached a new audience, his first sermon would be on generosity, not on other points of doctrine.
https://www.accesstoinsight.org/lib/authors/various/wheel367.html

FWIW