Editing Timeline of historic inventions (section)

====2nd century BC====
{{main list|2nd century BC#Inventions, discoveries, introductions}}
* '''2nd century BC:''' [[Paper]] in [[Han dynasty]] [[China]]{{efn|Although it is recorded that the Han dynasty (202 BC – AD 220) court eunuch [[Cai Lun]] (born c. 50–121 AD) invented the pulp papermaking process and established the use of new raw materials used in making paper, ancient padding and wrapping paper artifacts dating to the 2nd century BC have been found in China, the oldest example of pulp papermaking [[History of cartography#China|being a map]] from [[Fangmatan]], [[Gansu]].<ref>Buisseret (1998), 12.</ref>}}
*'''206 BC:''' [[Compass]] in [[Han dynasty]] [[China]]<ref>{{cite journal |last1=Guarnieri |first1=M |title=Once Upon a Time, the Compass |journal=IEEE Industrial Electronics Magazine |date=2014|doi=10.1109/MIE.2014.2316044 |s2cid=11949042 }}</ref>
* '''Early 2nd century BC:''' [[Astrolabe]] invented by [[Apollonius of Perga]].