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Which also leads to an important question: what stops Europe from serious civic/political unrest? Clearly not education, or "enlightened rationalism" but strong institutions and also economic stability (people have things to lose).
I wonder where they found their inspiration from. He does not match neither the Islamic nor Hindu descriptions of Muhammad of Ghor. According to the Hindu text Prithviraja Vijaya Muhammad had a "ghastly white" complexion which made him appear to be suffering from a skin disease.
The board is divided into 4 parts, each represents a season of the year. Every game consists of 5 rounds, each represents 5 parts of a day. Chips are two color: white and black representing day and night. Each side of the board has 12 blocks, which indicates 12 months of a year.
Amanullah Khan came to power in 1919 but was defeated and forced to flee by Habibullah Kalakani in 1929.
Valleys in Panjshir and the Wakhan Corridor in the Pamir Mountains. 
Ibn Sina´s definition of education:
The empire either lost interest or ability to control the former the region. Those lands were left in the hands of local satraps and lords. Heliocles was most likely the last GB to rule on the plains of Bactria (ca. 145-130 BC).
officers such as the "Kanarang" ("warden of the marches"). Civil officials existed, most of whom continuations from earlier periods and empires, such as the Greco-Bactrians. After conquering the Subcontinent, some Indian titles were also embraced by the Kushans.
https://twitter.com/BiruniKhorasan/status/1384215248731729926
Chinese craftsmen made Khorasan´s paper. This is literally what he said: