Editing 4th century (section)

==Inventions, discoveries, introductions==
{{main list|Timeline of historic inventions#4th century}}
* The [[Stirrup]] was invented in China, no later than 322.<ref>{{cite web|url=http://www.silk-road.com/artl/stirrup.shtml|title=The stirrup and its effect on chinese military history|first=Adela C.Y.|last=Lee|publisher=Silkroad Foundation}}</ref><ref name=":0">{{Cite web|url=http://www.chinaculture.org/gb/en_madeinchina/2005-07/21/content_70825.htm|archiveurl=https://web.archive.org/web/20081203175410/http://www.chinaculture.org/gb/en_madeinchina/2005-07/21/content_70825.htm|url-status=dead|title=The invention and influences of stirrup|archivedate=December 3, 2008}}</ref>
* [[Kama Sutra]], dated between {{Circa|400}} BC to c. 300 AD.<ref name="google">{{cite book |author=Sengupta, J. |url=https://books.google.com/books?id=V9Y_tQfm_WgC |title=Refractions of Desire, Feminist Perspectives in the Novels of Toni Morrison, Michèle Roberts, and Anita Desai |date=2006 |publisher=Atlantic Publishers & Distributors |isbn=978-81-269-0629-1 |page=21 |access-date=7 December 2014 |archive-url=https://web.archive.org/web/20160504150511/https://books.google.com/books?id=V9Y_tQfm_WgC |archive-date=4 May 2016 |url-status=live}}</ref><ref>{{Cite book |last1=Kakar |first1=Sudhir |url=http://archive.org/details/kamasutra00vats |title=Kamasutra |last2=Doniger |first2=Wendy |publisher=Oxford University Press |year=2003 |isbn=978-0-19-283982-4 |location=Oxford; Toronto |pages=xi |language=en}}</ref>
* [[Iron pillar of Delhi]], India is the world's first Iron Pillar.{{Citation needed|date=August 2022}}
* [[Trigonometric functions]]: The trigonometric functions [[sine]] and versine originated in Indian astronomy.<ref>{{cite book |last1=Bag |first1=A.K. |title=Mathematics In Ancient and Medieval India |date=1979 |publisher=Chaukhambha Orientalia |location=Delhi |page=15 |url=https://archive.org/details/mathematicsinancientandmedievalindiabaga.k.chowkambha_935_I/page/15/mode/2up}}</ref>
* [[Codex Sinaiticus]] and the [[Codex Vaticanus Graecus 1209]], are the earliest Christian bibles.<ref name="Aland">{{Cite book |last1=Aland |first1=Kurt |title=The Text of the New Testament: An Introduction to the Critical Editions and to the Theory and Practice of Modern Textual Criticism |last2=Aland |first2=Barbara |publisher=[[William B. Eerdmans Publishing Company]] |others=Erroll F. Rhodes (trans.) |year=1995 |isbn=978-0-8028-4098-1 |location=Grand Rapids, Michigan |page=109 |author-link1=Kurt Aland |author-link2=Barbara Aland}}</ref><ref name="INTF">{{Cite web |title=Liste Handschriften |url=http://intf.uni-muenster.de/vmr/NTVMR/ListeHandschriften.php?ObjID=20003 |access-date=16 March 2013 |publisher=Institute for New Testament Textual Research |location=Münster}}</ref>
* [[Book of Steps]], [[Syriac literature|Syriac religious discourses]].{{Citation needed|date=August 2022}}