Answer:
By the end of the 2nd century CE, the Han empire had declined after a period of chaos, from which three centres of political power emerged (Three Kingdoms). In 220 CE Xiandi, the last Han emperor, ceded the throne to Cao Pi, who thereby became the heir of the empire and the first ruler of the Wei dynasty in one region.
Explanation:
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Answer:
In 1883, it was the "railroad industry" that was responsible for creating the first system of time zones in the United States, since the beginning of rail travel meant that there needed to be a set table of departure and arrival times across the US.
Answer:
It became a better country, and we have not had a huge war like that again, yet.