"The cause of" would be the answer
in my judgement it is D.. sounds the most correct out of all :)
<span>Many social ills were happening of which people were opposing hence most of Americans found themselves taking part in reform movement which finally helped them to change things. Example of this kind of reform movements are: temperance movement, abolition movement, school and prison reform movement, and many others.</span>
It was written by the Catholic clergyman Heinrich Kramer (under his Latinized name Henricus Institoris) and first published in the German city of Speyer in 1487.
I believe the answer is: A. The church combined both Greek and Roman architecture, and became a melting pot where Eastern and Western cultures came together.
The combination became a proof of Cultural Assimilation that occurs between eastern and western church due to the good relation that exist between them. This indicate that in the past people from Byzantine and Roman empire were free to visit each other's region either for business, tourism , or studying.