An diofar eadar na mùthaidhean a rinneadh air "1800an"

Chaidh 3 baidhtichean a chur ris ,  8 bhliadhnaichean air ais
b
r2.5.4) (robot Modifying: en:1800s (decade)
b (r2.7.1) (Robot: Adding war:1800 nga dekada)
b (r2.5.4) (robot Modifying: en:1800s (decade))
[[da:1800'erne]]
[[de:1800er]]
[[en:1800–18091800s (decade)]]
[[eo:1800-aj jaroj]]
[[es:Años 1800]]
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deasachadh