© 2014

Federalism and Legal Unification

A Comparative Empirical Investigation of Twenty Systems

  • Daniel Halberstam
  • Mathias Reimann


  • The first comprehensive study of federalism and legal unification

  • Includes surprising findings that should make scholars rethink their abandonment of the civil/law common/law distinction in comparative law

  • Endorsed by the International Academy of Comparative Law, the world's premier association for the study of comparative law?


Part of the Ius Gentium: Comparative Perspectives on Law and Justice book series (IUSGENT, volume 28)

Table of contents

  1. Front Matter
    Pages i-x
  2. Comparative Analysis

    1. Front Matter
      Pages 1-1
  3. National Reports

    1. Front Matter
      Pages 69-69
    2. Alfredo M. Vítolo
      Pages 71-85
    3. Cheryl Saunders, Michelle Foster
      Pages 87-102
    4. Anna M. Gamper, Bernhard A. Koch
      Pages 103-119
    5. Alain-Laurent Verbeke, Alain-Laurent Verbeke, Alain-Laurent Verbeke
      Pages 121-151
    6. Jacob Dolinger, Luís Roberto Barroso
      Pages 153-167
    7. Jan Wouters, Hanne Cuyckens, Thomas Ramopoulos
      Pages 191-235
    8. Jürgen Adam, Christoph Möllers
      Pages 237-254
    9. Hean Leng Ang, Amanda Whiting
      Pages 295-337
    10. Oscar Echenique Quintana, Nadja Dorothea Ruíz Euler, Ricardo Carrasco Varona
      Pages 339-353
    11. Jeffrey Kahn, Alexei Trochev, Nikolay Balayan
      Pages 355-390
    12. Karthy Govender
      Pages 391-416
    13. Eleanor Cashin Ritaine, Anne-Sophie Papeil
      Pages 439-460

About this book


How and to what degree do federations produce uniform law within their system?  This comparative empirical study addresses these questions comprehensively for the first time.  Originally produced under the auspices of the International Academy of Comparative Law, this volume examines legal unification in twenty federations around the world. 

Each of the successive chapters presents the forces of unification through the lens of a particular federal system.  A comparative overview chapter provides a detailed analysis of the overall results with compelling visual illustrations of legal unification along different dimensions (e.g. by area of law; by federation; by civil vs common law system).  The overview chapter summarizes and analyzes the means and methods of legal unification and the degree of legal unification of each system, and explains the driving forces of legal unity and diversity in federations more generally. 

The volume presents surprising findings that should make scholars rethink their abandonment of the civil law vs. common law distinction in comparative law. ​

This book is a milestone in the study of federalism. It is a rare and welcome melding of comparative law and comparative politics using both original data and qualitative analysis. Wide-ranging, probing, and definitive, this book is an invaluable resource for students of law, politics, and multi-level governance.

Gary Marks, Burton Craige Professor, UNC-Chapel Hill, and Chair in Multilevel Governance, Vrije Universiteit Amsterdam


Age of Federations Central Government Power Comparative Federalism Cooperation among the Member Units Coordinate Unification Empirical Studies of Federalism European Union and Federalism Federalism Defined Federalism and Legal Unification Legal Education and Legal Practice Levels of Legal Unification Modes of Legal Unification Top-Down Unification Unification of Law Unification through Non-State Actors Uniformity by Areas of Law Uniformity by Federal System

Editors and affiliations

  • Daniel Halberstam
    • 1
  • Mathias Reimann
    • 2
  1. 1.Eric Stein Collegiate Professor of LawUniversity of Michigan Law SchoolAnn ArborUSA
  2. 2.Hessel E. Yntema Professor of LawUniversity of Michigan Law SchoolAnn ArborUSA

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