The last 25 years have seen the rapid and strikingly global spread of competition laws, from some thirty countries that had a competition law in 1990 to more than one-hundred and thirty (130) today.  The primary objective of this line of research is to gain a better understanding of this global diffusion of a long-prominent but also long contested legal norm.  Ultimately, we seek to analyze various aspects of this diffusion process, making use of the nuanced new data generated as part of the associated NSF Data Project.  For now, we are focusing on the initial adoption of antitrust laws in countries around the world.