History (Major)

History (from Greek ἱστορία, historia, meaning "inquiry, knowledge acquired by investigation") is the study of the past, particularly how it relates to humans. It is an umbrella term that relates to past events as well as the memory, discovery, collection, organization, presentation, and interpretation of information about these events. Scholars who write about history are called historians. Events occurring prior to written record are considered prehistory.

What people did before.

How to not make the same mistakes people made before.

If you're not interested in something with direct application to making money, but general application to everything.