The modern Tartaria theory holds that the historical term named something far more specific than European mapmakers understood: a single, technologically and architecturally advanced global empire, centred in Central Asia, that shaped much of the world's most impressive pre-20th-century architecture β and was then deliberately erased from history.
This is presented, by its proponents, as an alternative to the standard historical account rather than an addition to it. The theory doesn't claim Tartary was one region among many in a diverse, decentralised area β it claims that region was the seat of a unified, sophisticated civilisation whose existence and achievements have been actively hidden.