New regionalism is believed to owe its emergence to the transformations in the international system: the end of bipolarity, the decline of US hegemony, the emergence of a fragile multipolar world order, the growing interdependence between states, and the increased pace of globalization. States participate in the regionalization efforts voluntarily to manage the challenges of global transformations. Regionalism is one of those few instruments that are available to states as they work to cope with the challenges of globalization. In this context, for states, regionalism can also become a means to regain some control over the globalization process. One, therefore, can conclude that new regionalism and the rise of regions can be considered not only a result of, but also a reaction to, globalization. While the other choices (B, C, D, and) are individual problems related to globalization, they are not strong enough as single items to be cause of regionalism. Choice A covers all these issues under an umbrella.