<prompt> Qedela umusho olandelayo: Indodana endala kaFerdinand I, uBoris wathatha isihlalo sobukhosi ngemva kokulahla kukayise ngemva kokunqotshwa kweBulgaria eMpini Yezwe I. NgokweSivumelwano SaseNeuilly sika-1919, iBulgaria yaphoqeleka ukuba, phakathi kwezinye izinto, ilahle izindawo ezihlukahlukene, ikhokhe inhlawulo enkulu yempi, futhi inciphise kakhulu ubukhulu bempi yayo. Ngawo lowo nyaka, u-Aleksandar Stamboliyski we-Agrarian Bulgarian Agrarian National Union waba undunankulu. Ngemva kokugumbuqelwa kukaStamboliyski ngo-1923, uBoris waqaphela uhulumeni omusha ka-Aleksandar Tsankov, owacindezela kakhulu iQembu LamaKhomanisi laseBulgaria futhi wahola isizwe empini emfushane yomngcele neGrisi. UTsankov wasuswa emandleni ngo-1926, futhi kwabe sekulandela uchungechunge loNdunankulu kwaze kwaba ngo-1934, lapho inhlangano yezinkampani Zveno iqala  <response>: wabhikisha futhi wavimbela wonke amaqembu ezombusazwe. UBoris waphikisana nohulumeni weZveno futhi wawachitha ngo-1935, ekugcineni wafaka uGeorgi Kyoseivanov njengongqongqoshe. Phakathi nesikhathi esisele sokubusa kwakhe, uBoris wayezobusa njengenkosi ephelele eqinisweni, futhi oNdunankulu bakhe babezozithoba kakhulu entandweni yakhe. 