Romanians (dated: Rumanians or Roumanians; in or — historically, but now a seldom-used regionalism — rumâni; dated exonym: Vlachs) are natives of Romania that share a common Romanian culture, ancestry, and speak the Romanian language as a mother tongue, as well as by citizenship or by being subjects to the same country. The Romanian citizenship law legislated in March 1991 establishes the rights of second and third generation descendants of Romanian citizens to obtain a Romanian citizenship, if they speak fluent Romanian and are able to demonstrate sufficient knowledge in Romanian history and culture. 88.9 percent of Romania's people declared themselves as Romanians at the 2011 Romanian Census.