How were the franks connected to the catholic church

The connection was that the Franks and Catholic Church formed a partnership to rule the 'West'. the Church gave the Franks legitimacy and the backing of religion, the Franks gave the Church military and secular power so the Church would be obeyed and could get rid of any rivals. Hope this helps answers your question. 

"teotihuacan was the cultural center of the zapotecs".

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.