5. The Golden Era of Byzantine
It was during the reign of Justinian I when byzantine developed its law system which was named as The Justinian Code. Under these laws byzantine flourished a lot or you can say the most in the Roman era. Not just that Justinian also gained fame due to the architectural developments during his time. The most famous building during his time was Hagia Sophia which later became the Greek Orthodox Church. The church is still present in Istanbul and is known as one of the largest Churches in the current times.
Justinian was a ruler that encouraged arts and music as well with all the other developments. He was also a masterful builder so he during his times focused on the infrastructural developments. He is also known as a saint Eastern Orthodox Church but many of the Christians also disagree.