The basic concern of border studies is to examine and analyze interactions that occur when two groups come into contact with one another. Acculturation and globalization are at the heart of border studies, and cultural studies scholars try to describe the possible interactions in terms of conflicts and resolutions that become the result of those possible encounters. The present book is a peer-reviewed selection of papers presented during the IV Crossing Over Symposium at Cleveland State University held in October, 2011, and it is a follow-up to our discussion on border studies. The main focus of this volume is historical, [inter]national, gender and racial borders, and the implications that all of them have in the construction of an identity.