I think it was because dynastic rulers were so caught up with war that they had to let china have a time of peace so they could focus on wining their wars. I hope i helped you out!
They started domesticating wheat. This wasn't their main feat however since they also started herding sheep and domesticating goats. These two enabled them to stop moving around like nomads and make a real civilization in the area which resulted in what is now known as history.
Answer:
a) It has poisoned and killed them
Explanation:
Puget Sound, located in the northwestern coast of state of Washington in the United States of America, is a body of water that used to harbor thousands of marine wildlife species.
However, through constant monitoring, scientists have shown that hundreds to thousands of marine wildlife have disappeared due to pollution, especially single-use plastic bags, which have caused the death of thousands of whales and seabirds, and the presence of toxic chemicals and eutrophication, which have caused the reduction of oxygen levels in the water, leading to the death of many fish and marine mammals.
In the 1600's is when people came to America
