Which practice in the catholic church caused a rift between the papacy and the holy roman emperor?
a) changing the rules for appointments of church officers
b) forbidding catholic priests to marry
c) making latin the official language of the church

Assemblies do not have written codes of laws. laws are matters for magistrates and courts, not assemblies. codes of law are things such as civil law, criminal law, and constitutional law. what assemblies have are procedures regarding debating, voting and other business they might carry out.  also note that rome had three assemblies: the assembly of the soldiers, the assembly of the tribes, and the plebeian councils.