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Aryabhata: Invented zero, calculated value of Pi, discovered earth rotates on axis.
Varahamihira: Wrote Panchasiddhantika, categorized astronomical calculations.
Susruta: Ancient surgeon, author of Susruta Samhita detailing cosmetic surgeries.

Diwan-i-Arz: Military department established by Balban.
Diwan-i-Kohi: Agriculture expansion department created by MBT.
Taxes: Khams (1/5 loot), Kharaj (land tax), Jizya (religious tax on non-Muslims).

Vanguard Act 1878: Gagged vernacular newspapers, passed by Lytton.
Repeal Act 1882: Repealed the gagging regulations, passed by Ripon.
Metcalfe Act 1835: Liberated the Indian Press, Charles Metcalfe named 'Liberator'.

First metal used by man in India was ... ?

The grandfather of Ashoka who founded the Mauryan Empire was ... ?

The physician who lived in the court of Kanishka (Kushan Empire) was ... ?

The Sanskrit dramatist Kalidasa was a court poet of **Chandragupta II (Vikramaditya)**. was ... ?

The Chinese traveler Xuanzang (Hieun Tsang) visited India during the reign of **Harshavardhana**. was ... ?

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