In the late forties, as part of Truman's Point Four program, my alma mater, Oklahoma State (then Oklahoma A&M) set up a faculty and student exchange program with Ethiopia (then ruled by Haile Selassie). Ethiopia set up an Ag school and extension service, which was initially staffed by Okie Staters, then Ethiopian graduates of Okie State. And, finally, Ethiopian graduates of what we came to know as Ethiopia A&M.
By the mid fifties, Ethiopia was feeding itself -- for the first time ever. By 1960, they had become a net food exporter.
Then, Marxism arrived. And the rest is famine...