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In page Ruthenia:

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The use of the term Rus/Russia in the lands of Rus' survived longer as a name used by Ukrainians for Ukraine.[citation needed] When the Austrian monarchy made the vassal state of Galicia–Lodomeria into a province in 1772, Habsburg officials realized that the local East Slavic people were distinct from both Poles and Russians and still called themselves Rus. This was true until the empire fell in 1918.[1]