What were the important achievements of the Yuan dynasty?

#1 Yuan Dynasty unified China after a period of more than 300 years. ...

#2 The first paper currency to be used predominantly was Yuan's official banknote Chao.  

#3 Yuan astronomer Guo made the most accurate calendar built till then in China.  

#5 Novel was developed as a literary form.

the two things that develop a strong social foundation are: a. separation of church and states e. education received attention separation of church and states separate the illogical  argument that came from religious beliefs to a fact based belief. while education will make us remember the past to avoid the repeat of our mistakes.