Q
Hard 1 Mark
General Knowledge Islamic History
What year did the spread of Islam beyond Arabia begin most rapidly?
Explanation
The spread of Islam beyond Arabia began under Abu Bakr, accelerated dramatically under Umar (who conquered Egypt, Syria, Iraq), and continued at pace under the Umayyads — all phases contributed.
Reference: Islamic History - General Knowledge , Page 4
Hint
Each caliphate contributed to Islamic expansion — no single one can be credited alone.