The link below is very well written. It is from the History department of Hanover College, Indiana. It is a brief article on some of the reasons for studying undergraduate History. At the bottom of the page are links to similar articles. A good stimulus perhaps before starting the first draft of your personal statment.
“History is unique among the liberal arts in its emphasis on … context. Historians insist that the past must be understood on its own terms…as part of a web of interrelated institutions, values, and beliefs that define a particular culture and era. Among the liberal arts, history is the discipline most concerned with understanding change.”