The Byzantine Emperor whose code influenced the future moidern-day monarchs in Europe and would unite the byzantine lands was...

Constantine
Constantine

Muhammad
Muhammad

Charels Martel
Charels Martel

Justinian
Justinian

The correct answer is Justinian. Justinian's code, known as the Justinian Code or Corpus Juris Civilis, had a significant impact on the development of European legal systems and influenced future monarchs in Europe. It helped to unify the Byzantine lands under his rule and establish a strong and centralized government.