Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Yaƙe-yaƙe na Byzantine-Sassanid na ƙarni na 6 da 7 da kuma barkewar annobar cutar bubonic (Cutar Justinian) sun bar duka daular da ta gaji da rauni a gaban fitowar da Larabawa suka yi. Na ƙarshe na yaƙe-yaƙe tsakanin daular Rome da ta Farisa ya ƙare da nasara ga Byzantines: Sarkin sarakuna Heraclius ya dawo da duk yankunan da aka rasa, kuma ya mayar da Gicciye na Gaskiya zuwa Urushalima a 629. Duk da haka, ba a ba da mulkin mallaka damar samun damar dawowa ba, kamar yadda a cikin 'yan shekaru suka sami kansu cikin rikici da Larabawa (sabon Musulunci), wanda, a cewar Howard-Johnston, "za a iya kwatanta shi da tsunami na mutum". A cewar George Liska, "rikice-rikicen Byzantine-Persian da ba dole ba ya buɗe hanya ga Islama". A ƙarshen 620s, Annabin Islama Muhammad ya riga ya sami damar haɗa yawancin Arabiya a ƙarƙashin mulkin Musulmai ta hanyar cin nasara da kuma yin kawance da kabilun da ke makwabtaka da su, kuma a ƙarƙashin jagorancinsa ne farkon rikice-rikicen Musulmai da Byzantine suka faru. Bayan 'yan watanni bayan Sarkin sarakuna Heraclius da janar na Farisa Shahrbaraz sun amince da sharuddan janye sojojin Farisa daga lardunan gabashin Byzantine da aka mamaye a 629, sojojin Larabawa da na Byzantine sun yi karo da juna a Mu'tah don mayar da martani ga kisan jakadan Muhammadu a hannun Ghassanids, masarautar Byzantine. Muhammadu ya mutu a shekara ta 632 kuma Abu Bakr ya gaje shi, Halifa na farko tare da ikon da ba a iya jayayya da shi ba a duk yankin Larabawa bayan nasarar Ridda Wars, wanda ya haifar da karfafa ikon musulmi a duk yankin.  Tambaya: Wanene ya gaji Muhammadu?
Abu Bakr