To be honest I think its either b th<span>ough because it is true that many Native Americans were killed when Europeans colonized and they also needed many slaves from Africa it could also be d. </span>
Answer:
By opening interaction with western nation.
Explanation:
In the past, both of these nations were extremely secluded and homogeneous. They strive to produce their own consumption products without any form of trades with another nation.
But they soon realize that it is much more beneficial to be involved in international trades due to the increase of target market and
China started to opened up the possibilities for international relation in early 1800s, and started to show signs of economic growth from that decision. Japan see this, and decided to emulated China in 1854.
That being said, both nations were pretty adamant that they're not interested in any form of colonial relationship with the Europeans. They wanted to maintain complete autonomy over their territories and not afraid to retaliate if the western nations started to show that intention.
B. In the yellow and Yangtze River valleys
The Shang ruled in the Yellow River valley, which is commonly held to be the cradle of Chinese civilization. However, Neolithic civilizations originated at various cultural centers along both the Yellow River and Yangtze River. These Yellow River and Yangtze civilizations arose millennia before the Shang.
because it was the roaring twenties.
D. is the answer.................