This article uses material from the Wikipedia 中文 article 1840年代, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). 除非另有声明，本网站内容采用CC BY-SA 4.0授权。 Images, videos and audio are available under their respective licenses. ®Wikipedia is a registered trademark of the Wiki Foundation, Inc. Wiki 中文 (DUHOCTRUNGQUOC.VN) is an independent company and has no affiliation with Wiki Foundation.
