Copyright Â© by The McGraw-Hill Companies, Inc. McCulloch v. Maryland 1. McCulloch v. Maryland. John Marshall. OVERVIEW. McCulloch v. Maryland established the basis for the expansive authority of the U.S. Congress. The Supreme Court held that the necessary and proper clause of the U.S.
Medical Definition of ambivert. : a person having characteristics of both extrovert and introvert.
Basically, an introvert is a person who is reserved, quiet, and solitary. Introversion and its opposite, extroversion, also spelled extraversion, form the ends of a continuum that describes one aspect of every person's personality.