Hammurabi's Code influenced future law codes primarily through A. An example of specific punishments for all citizens. This code established a system of laws that applied to all people within the society and detailed specific punishments for various offenses, which set a precedent for the codification of laws in later civilizations.
While options B ("an eye for an eye") reflects one of the key principles of the code, it is more of a concept than a broad influence on legal systems. Option C (written on stellae) and option D (written in different languages) are related to the physical form and dissemination of the code rather than its influence on legal principles.