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.
1. showing consistency; not self-contradictory. 2. (foll by: with) in agreement or harmony; accordant. 3. steady; even: consistent growth. 4. (Mathematics) maths (of two or more equations) satisfied by at least one common set of values of the variables: x + y = 4 and x â y = 2 are consistent.