The various Categries of History;

History of the Universe
- How the Universe come into being at the beginning of Time
- How the structures of he Universe such as Stars, Galaxies and Planets formed

History of the Earth
- How the Solar System and our "Spaceship Earth" formed
- How the Geological forces shaped the Earth Structure
- How the Earth became "Habitable" for Lifeforms

History of Life
- How Life Originated from Inanimate Matter
- How Simple Lifeforms Evolved into the Complex variety of Life seen today
- How some lifeforms become winners in the struggle for existence whereas others became Extinct


History of Humankind
- Where and when did the Human Species first appear on Earth
- How and when did Humans migrate to all corners of the globe
- How the great diversity of Humanity seen today (both in terms of Biology and Culture) came about


History of Civilization
- Societies & Power Structures
- Cultures & Ideas
- Sciences & Technologies
- Arts & Architecture
- Economic Forces
- Migrations
- Warfare