I think it should be 3 cotton for one week.
Answer:
There were new technologies such as machine guns and submarines. Technologies that we only used by a few countries at the start. The development of tanks emerged during this period.
C) <span>Chaos and violence associated with the Democratic party convention led Americans to elect a member of the Republican party</span>
The answer is a. reunifying several kingdoms.
At the end of Tang Dynasty before Song Dynasty, The country was split into many kingdoms, the emperor of song dynasty also belonged to one of the kingdom. After his rise,he defeated the rest of the kingdoms one by one and finally reunifying the country.
