Grand Duchy of Lithuania also re-established the permanent capital of the Grand Duchy in Vilnius, presumably moving it from Trakai in 1323; some researchers, such as Maciej Stryjkowski, claim that Navahrudak was the capital of the 13th century state. Lithuania was in an ideal position to inherit the western and the southern parts of Kievan Rus'. While almost every other state around it had been plundered or defeated by the Mongols, the hordes stopped at the modern borders of Belarus, and the core territory of the Grand Duchy was left mostly untouched. The weak control of the Mongols over the areas they had conquered
Name of Lithuania original word should have no suffix. A likely candidate is "Lietā". Because many Baltic ethnonyms originated from hydronyms, linguists have searched for its origin among local hydronyms. Usually such names evolved through the following process: hydronym → toponym → ethnonym. A small river not far from Kernavė, the core area of the early Lithuanian state and a possible first capital of the would-be Grand Duchy of Lithuania, is usually credited as the source of the name. This river's original name is Lietava. As time passed, the suffix -"ava" could have changed into -"uva", as the two are from the same