Complex sentence: Although it is accepted that obtaining statistics regarding world hunger is difficult, it is believed that in the early 1960's, there were 900 million undernourished individuals worldwide, the majority of whom were located in developing nations such as Africa, Asia and Latin America.
Split into simpler sentences: Although it is recognised that obtaining statistics regarding world hunger is difficult, it is believed that in the early 1960's, there were 900 million undernourished individuals worldwide. The majority of these people were located in developing nations such as Africa, Asia and Latin America.