Iron technology was perfected by the

Iron Technology was improved during the Warren States period in China, from 776 BC to 221 BC. This was also a period known as the Iron age, as regional lords in China sought to improve their iron manufacturing techniques in order to elaborate better weapons that will bring them a competitive edge against their pairs.

During this time, meteoric iron was replaced with a new type of iron nicknamed "Pig Iron", which was easier to work with.

500 books can be produced by one man and a printing press within 5 months, while a copyist can only produce one in the same amount of time

answer; /// slavery should be outlawed in the new country, was part of the initial draft of the declaration of independence, but not part of the final