Asker's rating. 1  Theme Of A Book Definition. Source(s): https://shrink.im/babyI. 2  The theme of a book means the meaning of the book or the life lesson that the book teaches. Basically the purpose of the book. 3  The theme of a book is the important life lesson that is being implied. It is something with a deeper meaning that is related to life.
It was only in the recent time that the concept of Caucasian originated. The term can be traced to the 19th century and has been derived from a region of the Caucasus Mountains. German scientist and anthropologist Johann Friedrich Blumenbach is credited with the development of the term Caucasian in 1800.
The United States National Library of Medicine often used the term Caucasian as a race in the past. However, it later discontinued such usage in favor of the more narrow geographical term European, which traditionally only applied to a subset of Caucasoids.he United States National Library of Medicine often used the term Caucasian as a race in the past. However, it later discontinued such usage in favor of the more narrow geographical term European, which traditionally only applied to a subset of Caucasoids.