Answer:
B: North Korea has grown isolated, while South Korea's economy has grown
Explanation:
I would go with C cause its the only one that would go along the lines of buying or selling
Early machine guns, such as those in 1914, could fire 400-600 rounds per minute. After the war, the figure was more than doubled. The machine guns in could fire more than 1000 rounds per minute. The rounds were fed via a fabric belt or a metal strip. I hope this helps.
The Zhou created the Mandate of Heaven: the idea that there could be only one legitimate ruler of China at a time, and that this ruler had the blessing of the gods. They used this Mandate to justify their overthrow of the Shang, and their subsequent rule