The kind of informational text that a book written by a historian about the life and times of George Washington would fall under is a biography.
The kind of informational text that best describes a book written by a historian about the life and times of George Washington is a biography. A biography is a non-fictional account of a person's life, typically written by someone who has researched and studied the subject extensively. In this case, the historian focuses on George Washington, providing details about his life, achievements, historical context, and other relevant information to present a comprehensive picture of his life and the era in which he lived.
