Military expansion. The Rashidun Caliphate expanded gradually; within the span of 24 years of conquest, a vast territory was conquered comprising Mesopotamia, the Levant, parts of Anatolia, and most of the Sasanian Empire. Unlike the Sasanian Persians, the Byzantines, after losing Syria, retreated back to Anatolia.
1 And the nature of this reality again can neither be consistently represented as a fixed and hard substance nor as an unalterable something, but only as a fixed order of recurrence of continually changing events or impressions.
(kÉn-sÄ­sâ²tÉnt) adj. 1. In agreement; compatible: The testimony was consistent with the known facts. 2. Being in agreement with itself; coherent and uniform: a consistent pattern of behavior. 3. Reliable; steady: demonstrated a consistent ability to impress the critics. 4. Mathematics Having at least one common solution, as of two or more equations or inequalities.