what features of okonkwo's character persuades nmwkibie to give him the give him the yam seeds

Okonkwo is a bit of a folk hero around the area. His father was so scorned that they didn't even bury him near the village. Okonkwo came from nothing to build a rather prosperous farm. He is a strong warrior and a good provider. Okonkwo is also a physically impressive man with an extremely strong work ethic. Okonkwo's plan is to enter into a sharecropping agreement with Nwakibie. Nwakibie likes Okonkwo's work ethic and reputation. He expectantly gives Okonkwo twice the number of yam seeds that Okonkwo expected.