Repliessteem.history (78)in vanished • 3 months agoRE: 五个已经消失的文明,现存文明的优越性Hello welcome to Steemit world! I'm @steem.history, who is steem witness. This is a recommended post for you. Newcomers Guide and The Complete Steemit Etiquette Guide (Revision 2.0) and…