How did the development of steel and oil refining affect u. s. industry?

The development of steel and oil caused many spin-off inventions to be created subsequently. For example, railroads were invented as a result of steel, and once oil was invented these trains were much more efficient. Then, more goods and materials could be transported to many different places, causing other industries to grow even if they don't physically require steel and/or oil. Other inventions such as cars, skyscrapers, and much more that contributed to creating a more modern society were also brought into the time.

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.