In parts of Africa, the central missionary question is polygamy. The Bible is of course quite clear on the subject. Polygamy is fine in the Old Testament; and even in the New, it is only bishops who are required to be 'the husband of one wife.
Christian Science Monitor - Thawabta and about 20 percent of the men in his village, according to local estimates, maintain that the Koran provides the framework for polygamy.
CNN - Although polygamy has been accepted for centuries in Africa, many in Zimbabwe feel the practice is in direct conflict with the modern-day values now practiced in much of the country.