……………. discovered the concept of ‘true north’ and improved the design of ‘armillary sphere’.

Related MCQs

• The rediscovery of the ancient classics was improved after the fall of………………., which led to the opening of the modern period and the Renaissance in Europe.
• In astronomy, …………..improved the measurements of Hipparchus.
• After the death of the prophet in……………., the Arab kingdom developed into a vast empire, comprising of Arabia, Syria, Egypt, Iran Central Asia, North Africa and Spain.
• After…………………’s death external threats to his empire intensified, the Persians from the east and Slavs, Hungarians, Huns etc. from the north.
• …………….. was founded by north German towns and German mercantile communities to protect their mutual trading interests.
• ………………….was an economic alliance of trading cities and their guilds that dominated trade along the coast of north Europe in the later middle ages.
• As a part of the search for remedy of the problem of deforestation, the ……………..discovered how to produce cake from bituminous coal as a substitute for charcoal.
• The oldest mathematical document produced in India is the ‘Bakhshali Manuscript’ discovered in 1881 in the village of …………….near Peshwar, now in modern Pakistan.
• Several Rajput States also emerged during this period in North India, especially after the decline of the……………...
• The ……………..rulers were successful in bringing the entire north India under their control especially in the 14th century.