This question seems to be incomplete. However, there´s enough information to find the right answer.
Answer: The Code of Hammurabi
Explanation:
Jacques de Morgan was an archaeologist commissioned by the French government to work in the site of Susa, the Ancient City of the Persian Kings, where Iran is currently located. There, in December 1901, he found three pieces of black basalt that together made up the pillar that held the long lost Code of Hammurabi.
