That maps included sphere of influence and client state. So it's accurate. All of those regions in Africa have been under either direct Arab rule or influence since the beginning of Islam. The map of the ME is also fully correct. Caucasus too. Europe as well. Only Central Asia can be discussed in terms of client states/sphere of influence.
What remains certain is that Arabs controlled large Turkic areas in Central Asia, Caucasus and much of modern-day Turkey.
Of course Arabs did not reach Mongolia and Siberia. Why should they? There was nothing there. Extremely sparsely populated. Landlocked etc.
The sphere of influence as I told was the entire traditional/historical ME (West Asia), all of Northern Africa and parts of Sub-Saharan Africa (Swahili coastline mainly - itself an word of Arab origin), Horn of Africa, nearby Southern Europe, Caucasus and those parts of Central Asia.
Later South East Asia through trade and settlement. A bit like South Asia overall. Islam was mainly spread by Arab travelers, traders, sufi and to a smaller extent Persian Muslims into South Asia.
An invasion never took place as South Asia was too populated and to far away to control. There were limits to how much land you could control being on already 3 continents and facing powerful opponents and enemies on all 3 continents.
Anyway I can feel your pain discussing with some of the Indians here. Man, at least our rivalries with the Persians are somewhat historical and we both tend to know about our region. I surely hope the Indians are not as clueless on South Asian matter as they are on Middle Eastern.
Surprisingly the Pakistani, Bengali etc. members are not like that. Sri Lankan's neither.
I don't know what they teach people in India.
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KingMamba
Believe it or not mate but the Umayyad Caliphate at its greatest extent was 3 (!) times bigger than the Ottoman Caliphate at its greatest extent. Let alone the client states and sphere of influence.
List of largest empires - Wikipedia, the free encyclopedia
I was also surprised by that but it is nevertheless true.