In the late 7th century, the Native American population dropped drastically due to a <span>contagious disease.
</span><span> contagious </span>diseases can transmit from person to another easily.
<span>The astronomical system of Ptolemy, in which the earth is at the center of the universe with the sun, moon, planets, and stars revolving about it in circular orbits at increasing distance. Some of the orbits have epicycles.</span>
Because history tends to repeat itself and these stories echo events in real life.
The Answer is C because
The agreement that divided Persia into three zones, a large Russian zone to the north, and two smaller zones, one which neither country dominated, and a British zone to the south. Afghanistan was less of a trade partner to Russia, but there were concerns about the border, in relation to crime, refugees and diseases.
I think the answer should be A.
Hope this Helps! :)
