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.
continuous. Continuous describes that which is absolutely without pause or break; continual, that which often intermits, but as regularly begins again. A continuous beach is exposed to the continual beating of the waves. A similar distinction is made between incessant and ceaseless. The incessant discharge of firearms makes the ceaseless roar of battle.