Why did Justine demand a Group of lawyers rewrite roman the laws?

Answer 1

Justinian I (or the Great) did not rewrite anything. You should also be more specific in your question. He rewrote Roman what? I will assume that you are referring to Roman law, which he did not rewrite.

Justinian I commissioned a panel of law experts to compile a collection of books called Corpus Juris Civilis (Body of Civil Law), which was also dubbed Justinian Code in the 16th century. A first edition was published in 529 and a second one in 534. It was a very comprehensive digest of centuries of Roman civil law. It also included collections of essays by famous jurists in two student textbooks. It has provided the basis of the civil law of many modern countries.

The Corpus Juris Civilis came in four parts:

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1) The Codex (book) or Codex Justinianus, which was a review of imperial laws going back 400 years (to the time of Hadrian). It scrapped obsolete or unnecessary laws, made changes when necessary and clarified obscure passages. Its aim was to put the laws in a single book (previously they were written on many different scrolls), harmonise conflicting views among jurists which arose from centuries of poorly organised development of Roman law and have a uniform and coherent body of law. It consists of 12 books, 1 book covers ecclesiastical law, the duties of high officers and sources of law, 7 cover private law, 1 criminal law and 3 administrative laws.

2) The Digesta is a collection of fragments taken from essays on laws written by jurists (mostly from the 2nd and 3rd centuries) which express the private opinions of legal experts. Most were from Ulpian (40%) and Paulus (17%). It was a large amount of writing which was condensed in 50 books. It was used as an advanced law student textbook.

3) The Institutiones is a textbook for first year law students written by two professors. It was a series of extracts from statements on the basic institutions of Roman law from the teaching books by 'writers of authority.' In was largely based on the texts of Gaius, a jurist of the 2nd century AD.

4) The Novellae Constitutiones, which contained laws recently issued by Justinian.

Answer 2

The laws were confusing and disagreed with each other.