With the intensification of the globalization phenomenon, national structures are been faced with a increasingly need to deal with the influences and results of events and situations that happen in other nations. So, when it comes to discussing the law, there is an urgent need to analyze the national and international dimensions of legal matters. In order to provide you with the knowledge basis to reflect on such a complex theme, this book brings together several academic articles in which renowned authors examine the dynamics that conduct law in both national and international spheres. Thus, among the authors that wrote this book, you will find the following names: Carlos Mário da Silva Velloso, Francisco Rezek, Jorge Miranda, Manoel Gonçalves Ferreira Filho, Marcelo Porciúncula and Martonio Mont’Alverne Barreto Lima.