Vedic Tradition or also called Vedic Civilization/Culture/Heritage/Philosophy refers to the civilization, philosophy, culture, science and knowledge system that has its origin from the ancient bharatavarsha (the Indian subcontinent), that is based on the sastras (Vedic Scriptures). The Vedic tradition of knowledge, based on the extensive Vedic literature, is the oldest tradition of knowledge in the world. Though it has been long preserved in India, this traditional wisdom has been almost lost in recent centuries — due in part to repeated foreign invasions. The Vedic tradition includes detailed information on a wide range of topics—from astronomy to music, architecture to health care, administration to economy. But it is all based on the knowledge of consciousness — including technologies of consciousness, and evolution to the highest state of consciousness.