Prelims 2020 - Preparing Repeatedly Asked Questions

https://www.livemint.com/Politics/QYaohpsFZCqbxR1lrcy4JK/70-years-in-Indian-politics-and-policy.html. may be helpful.

https://www.livemint.com/news/india/a-short-history-of-indian-economy-1947-2019-tryst-with-destiny-other-stories-1565801528109.html

70_Policies.pdf. this file is may be also helpful as there are questions from thse things in recent papers.

https://www.isro.gov.in/about-isro/isro-centres. this link has ISRO facilities .

Could anyone provide a short and crisp Medieval India material for prelims.thank you.