The Emperor Wu also established a government monopoly in the trade in grain.
Gutenburg's printing press made books cheaper and available to a larger variety of people. Before the printing press, books were very hard to make and they took a long time to produce.
the longest one in history
An example of separation of power is having different branches of government that perform different duties, for example the legislative, executive, and judicial branch. Instead of having government concentrated into the power of one person
I don’t know your question so I can’t help you sorry