How did the abolitionist views of william lloyd garrison differ from those of earlier anti-slavery advocates?

He believed that colonization is bad and that former colonies with slaves should not be recolonized by someone else. The common practice was that when you help a colony free itself, the slaves go free but you keep the country as a colony of your own just with abolished slavery. He supported the idea that they should be left to be independent. 

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.