In the United States, a CV is used solely for the purpose of applying to jobs or openings in academia. As such, it’s a much more comprehensive overview of your career that can take as many pages as needed (i.e. 8 pages or more). In Europe, on the other hand, a CV is the equivalent of a resume. It is used to apply for jobs and is meant to provide a more “relevant” view of your work experience that meets the job's requirements. CVs are typically 1-2 pages long.