Hammurabi's Code was important because it was the first time that a state's laws ... provided prisons for punishment. were set down in writing. imposed taxes on citizens. applied to the royal household.

The correct answer for this question is "were set down in writing." Hammurabi’s Code was important because it was the first time that a state’s laws that were set down in writing. It is composed of different laws that regulates the peace and order in the community.