According to the <span>Niger-Congo hypothesis, the Bantu Africans originated from the </span><span>western and central Africa parts, and then went southward and eastward. </span>
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.
Its characteristics include the pointed arch, the ribbed
vault (which evolved from the joint vaulting of romanesque architecture) and
the flying buttress. The intersection of two to three barrel vaults produces a
rib vault or ribbed vault when they are edged with an armature of piped masonry
often carved in decorative patterns.
the answer is D.
Special districts (also known as special service districts, special district governments, limited purpose entities, or special-purpose districts in the United States) are independent, special-purpose governmental units that exist separately from local governments such as county, municipal, and township government, ...
