Final answer:
The Code of Conduct is based on concepts from Ancient Rome, which introduced legal principles like the presumption of innocence and established guidelines for justice and social conduct.
Step-by-step explanation:
The Code of Conduct first expressed in written form in 1955 is based on concepts and traditions that date back to Ancient Rome. Some of the foundational concepts of Roman law include the use of precedent in legal decisions, the interpretation of the spirit of the law beyond its literal meaning, and the revolutionary idea that the accused is innocent until proven guilty. Roman legal principles, such as those recorded in Rome's Twelve Tables around 450 BCE, have made a lasting impact, setting standards for justice and conduct that continue to influence modern societies.