Sii wad qodobkan - Faa'iidooyinka magaaladda Laa waxaa la xaqiijiyay markii dhulkii Austria uu u gudbay Boqor Ottokar II ee Bohemia, iyo mar kale 1281 boqorkii Habsburg Boqor Rudolph I ee Jarmalka ka dib guushiisii Dagaalkii Marchfeld. Si kastaba ha noqotee, muhiimadda magaalada ayaa hoos u dhacday tobannaankii sano ee la soo dhaafay, waxaa baabi'iyay ciidammadii Margrave Jobst ee Moravia sanadkii 1407 iyo mar kale 1426 by Hussite
ciidamada Sida laga soo xigtay halyeeyga, Pope Pius II (Enea Silvio Piccolomini) wuxuu wadaad ka ahaa kaniisadda Laa laga soo bilaabo 1442, dhab ahaantii wuxuu u adeegay sida wakiilka baadari ee Imperial Diet iyo lataliyaha Emperor Frederick III. Si loo hagaajiyo dhaqaalaha Laa, muwaadiniinta waxaa la siiyay mudnaanta khamriga 1454.