The correct answer is letter D
The main pueblos were located in Chaco Canyon, in northwestern New Mexico. There, Anasazi society developed from 600 AD until the second half of the 12th century, and at its peak Pueblo Bonito, the region's main stronghold and mixed political, economic and religious center, housed around 1,200 inhabitants - 25% of all the canyon population.
A walk through the Chaco Canyon nowadays causes astonishment to the visitors. The region is uninhabited and occupied by sparse and low vegetation.
The modern process is named after its inventor, the Englishman Henry Bessemer<span>, who took out a </span>patent<span> on the process in 1856.</span><span> The process was said to be independently discovered in 1851 by the American inventor </span>William Kelly,<span> though there is little to back up this claim.</span>
