Charlemagne's significant achievements included: 
A.
reducing the Catholic Church's political influence.

B.
protecting religious freedom for non-Christians.

C.
securing huge supplies of gold to mint new coins.

D.
supporting education and the arts in western Europe.

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.

sorry i tried to but i didn’t get it