Answer:
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The answer in this question is Southern and central China. In the year nineteenth century in China and East Asia it was mainly in Southern and central China. On the graphic that is included in the question the British sphere of influence in the 19th century in East Asia and China was mainly in southern and central China.
I would said the answer is " <span>It allowed for important discoveries such as the circulation of blood through the body" </span>
Lines of latitude, also called parallels, "<span>a. run in an east and west direction and measure distance north and south of the equator", while lines of longitude run North and South. </span>