It is emphasized in the passage that the southern states of Africa, such as Zambia ----.

Southern Africa's food crisis looks like being the
worst in a decade. Around 14.5 million people are
dangerously hungry, and many have been reduced
to eating wild leaves and herbs . One might then
expect food aid to be welcomed. But Zambia is
refusing to accept American donations because
much of its corn and soya is genetically modified.
Zambia's president, Levy Mwanawasa, calls he
stuff "poison" and refuses to import, despite a
warning from the UN World Food Programme, on
September 16th that relief supplies in his country
could run out in two weeks.