Answer:
The Columbian Exchange, though a highly lucrative trade route, was a direct source of hardship for many peoples. Native Americans, for example, had their populations decimated by diseases to which they had no immunity. Whole communities were wiped off the map, those that remained were too small in number to halt the colonization efforts of the European powers.
Explanation:
I just took this quiz on Edgenuity. The answer is option C, To prevent the continued rise of greenhouse gas concentrations. Hope this helps. Please give me brainliest :)
The City Wall of Nanjing<span> (</span>Chinese<span>: </span>南京城墙<span>; </span>pinyin<span>: </span>Nánjīng chéngqiáng<span>) was designed by </span>Emperor Zhu Yuanzhang<span> (r. 1328–1398) after he founded the </span>Ming Dynasty<span> (1368–1644) and established </span>Nanjing<span> as the capital 600 years ago. To consolidate his sovereignty and keep out invaders, he adopted the suggestions of advisor Zhu Sheng to build a higher </span>city wall, to collect grains and to postpone the coronation. Then, he started to build the city wall. It took 21 years to complete, and used 200,000 laborers to move 7 million cubic metres of earth. The City Wall of Nanjing was among the largest city walls ever constructed in China.[1][2]<span> The enclosed </span>Nanjing City<span> is about 55 square kilometers.</span>
It promised that it was possible to get vast areas of land and become wealthy, however, it was deceptive because people didn't know how much they would have to work on the land and how much physical labor was involved, and many didn't want this type of hard physical labor for themselves.
