Why we're these native americans thought of as civilized

Five Civilized Tribes. The Five Civilized tribes were the Cherokee, Chickasaw, Choctaw, Creek and Seminole. They had Freedmen who were former African American slaves of tribal members or descendants of former slaves living among them.

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The correct answer is B.

Muhammad's s.a.w.s journey from Mecca to Medina is known as Hijrah and is the beginning of the Islamic Calendar.