Mezue ahịrịokwu na-esonụ: A na-akọwa Rashidun Caliphate site na afọ iri abụọ na ise nke mgbasawanye ngwa ngwa nke ndị agha, na-esote afọ ise nke
esemokwu dị n'etiti ha. Ndị agha Rashidun n'oge kachasị elu ha karịrị ndị agha 100,000. Site na 650s, caliphate na mgbakwunye na Arabian Peninsula meriri Levant, na Transcaucasus na ugwu; North Africa site na Egypt ruo Tunisia nke ugbu a na ọdịda anyanwụ; na Iranian plateau ruo akụkụ nke Central Asia na South Asia n'ebe ọwụwa anyanwụ.