Answer:
Shifting cultivation is an agricultural system in which a person uses a piece of land, only to abandon or alter the initial use a short time later. This system often involves clearing of a piece of land followed by several years of wood harvesting or farming until the soil loses fertility.
<u>Answer:</u>
The issue of diseases and bad odour spreading due to accumulating dirt contributed most to the need for this permanent sanitation group.
<u>Explanation:
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- The need for having a dedicated permanent sanitation group did not surface until deadly disease-causing germs and viruses started developing in the heaps of accumulated dirt.
- The demand for properly sanitizing the waste gained pace as some people died of the diseases caused by the dirt that got accumulated.
- To avoid such happenings again, the administration decided to appoint a permanent sanitation group.
In the 600's, Islam spread far North and East Africa through trade and the spread of the Arabic language. The expansion of the Arab Empire in the years following the Prophet Muhammad's death led to the creation of caliphates, occupying a vast geographical area and conversion to Islam was boosted by missionary activities particularly those of Imams, who easily intermingled with local populace to propagate the religious teachings.