The goal of our research group is to examine the historical process by which common law has spread around the globe. English law and the legal systems that arose from these systems, primarily American law, have enjoyed immense success in conquering the world. Our group seeks to understand the factors assisting and inhibiting common law transplantation in the distant and more recent past. We will do so by bringing into sharp focus two specific historical examples of common legal law transplantation, to compare them to gain a better understanding of the process that we will examine. The two examples are the United States and Israel. Both countries provide instructive examples of common law transplantations, its successes and problems.