In 1945 the japanese emperor announced that
the japanese royal family would no longer rule over japan
his ancestors originally came from korea
he would depose the shogun and rule over japan directly
he and his family were not divine and should not be worshipped like gods

In 1945 the Japanese Emperor announced that "the Japanese royal family would no longer rule over Japan," since this was considered detrimental to Japanese society, although the Emperor was still allowed to remain as a "figurehead". 

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.