Good afternoon.
This thesis statement is probably a bit too narrow. As it is, I cannot tell what it is going to be about, as all you have provided is a broad definition. As this is, it's not really a thesis statement but rather an opening sentence, a "hook" to get readers interested. Your thesis should start out broad and then narrow down to the exact statement near the end, much like a funnel. You should include something about classification and division in the essay, and a great amount of detail as to what you will be classifying or dividing.
I hope this helps.
Regards,
Gloria
Moderator, EssayForum.com
Gloria, EssayForum.com