Editing AD 105 (section)

=== By topic ===

==== Art and Science ====
* [[Papermaking]] is refined by the Chinese eunuch [[Cai Lun]], who receives official praise from the emperor for his methods of making paper from tree bark, [[hemp]], remnant [[textile|rags]] and [[fish net]]s. Paper had been made in [[China]] from the [[2nd century BC]], but Cai Lun's paper provides a writing surface far superior to pure [[silk]] and is much less costly to produce. [[Bamboo and wooden slips]] will remain the usual materials for [[book]]s and [[scroll]]s in most of the world for another 200 years, and paper will remain a Chinese secret for 500 years.
* The [[Trajan Bridge]] is finished. For more than a thousand years, it is the longest arch bridge in the world to have been built, in terms of both total and span length.<ref>In terms of overall length, the bridge seems to have been surpassed by another Roman bridge across the Danube, [[Constantine's Bridge (Danube)|Constantine's Bridge]], a little-known structure whose length is given with 2437 m ({{harvnb|Tudor|1974|p=139}}; {{harvnb|Galliazzo|1994|p=319}}).</ref>

==== Religion ====
* [[Pope Alexander I]] succeeds [[Pope Evaristus]] as the sixth [[pope]] according to Roman Catholic tradition (approximate date).
* Change of [[Ecumenical Patriarch of Constantinople|Patriarch of Constantinople]] from Patriarch Plutarch to Patriarch Sedecion.