Approximately how many years after the death of the Prophet (PBUH) had the early Islamic conquests already extended from Spain in the west to parts of Central Asia in the east?

Explanation

– Within approximately 100 years following the death of the Prophet (PBUH), the early Islamic conquests had already extended remarkably from Spain in the west to parts of Central Asia in the east.
– This rapid territorial expansion, occurring largely during the Umayyad Caliphate, represents one of the most significant and swift territorial expansions in recorded history.
– For exams, remember that this vast expanse encompassed a diverse range of cultures, languages, and pre-existing civilizations, all gradually integrated into the broader Islamic world.