<prompt> Bhala okuqhubekayo kwalesi sigaba - Ngemva kwe-Anschluss kaMashi 1938, lapho iJalimane yahlanganisa khona i-Austria, iYugoslavia yahlanganyela umngcele wayo osenyakatho-ntshonalanga neJalimane futhi yaba ngaphansi kwengcindezi eyandayo njengoba omakhelwane bayo babezihlanganisa nemibuso ye-Axis. Ngo-April 1939, i-Italy yahlasela futhi yahlasela i-Albania, kanjalo yakha umngcele wesibili womhlaba neYugoslavia. Lapho kugqashuka iMpi Yezwe II, uHulumeni WaseYugoslavia WaseBukhosini wamemezela ukungathathi hlangothi kwawo. Phakathi kuka-September no-November 1940, iHungary neRomania zajoyina i-Tripartite Pact, zavumelana ne-Axis, futhi i-Italy yahlasela iGrisi  <response>: . futhi. Ngalesosikhathi iYugoslavia yayisizungezwe cishe ngokuphelele amabutho e - Axis namabutho awo, futhi isimo sayo sokungathathi - hlangothi empini saba nzima. Ekupheleni kuka-February 1941, iBulgaria yajoyina i-Pact. Ngosuku olulandelayo, amabutho aseJalimane angena eBulgaria evela eRomania, avala umngcele ozungeze iYugoslavia. Ehlose ukuvikela uhlangothi lwayo oluseningizimu ekuhlaselweni okuseduze kweSoviet Union, umashiqela waseJalimane u-Adolf Hitler waqala ukucindezela kakhulu iYugoslavia ukuba ijoyine i - Axis. Ngo-25 Mashi 1941, ngemuva kokubambezeleka okuthile, uHulumeni waseRoyal Yugoslav wasayina lesi Sivumelwano. Ezinsukwini ezimbili kamuva, iqembu lezikhulu zeRoyal Yugoslav Air Force ezazishisekela iNtshonalanga, ezazishisekela ubuzwe baseSerbia laxosha umbusi wezwe, iNkosana uPaul, ekuvukeleni kombuso okungenakuphela kwegazi. Babeka umshana wakhe osemusha uPeter esihlalweni sobukhosi futhi baletha uhulumeni wobumbano lwesizwe owawuholwa yinhloko yeRoyal Yugoslav Air Force, uJenene Dušan Simović. Lokhu kuhlasela kwamthukuthelisa uHitler, owayefuna ukudiliza iYugoslavia ngokuphelele, ayibiza ngokuthi umfanekiso waseVersailles. Ngakho-ke ngokushesha wayala ukuba iYugoslavia ihlasele, eyaqala ngo-April 6. 