Nationalism and archaeology have been closely related since at least the nineteenth century. Nationalist ideologies frequently employ results of archaeology and ancient history as propaganda, often significantly distorting them to fit their aims, cultivating national mythologies and national mysticism. Frequently this involves the uncritical identification of one's own ethnic group with some ancient or even prehistoric (known only archaeologically) group, whether mainstream scholarship accepts as plausible or rejects as pseudoarchaeology the historical derivation of the contemporary group from the ancient one. The decisive point, often assumed implicitly, that it is possible to derive nationalist or ethnic pride from a population that lived millennia ago and, being known only archaeologically or epigraphically, is not remembered in living tradition. Examples include Kurds claiming identity with the Medes, Albanians claiming as their origin the Illyrians, Iraqi propaganda invoking Sumer or Babylonia, Hindu nationalists and Tamils claiming as their origin the Indus Valley civilisation —all of the mentioned groups being known only from either ancient historiographers or archaeology. In extreme cases, nationalists will ignore the process of ethnogenesis altogether and claim ethnic identity of their own group with some scarcely attested ancient ethnicity known to scholarship by the chances of textual transmission or archaeological excavation.