A little mis-conception here …. no matter how the biological structure of tribes and ethnicities are – tribes are not ethnicities. Tribes can be both, foreign beraing ones, as also the possibility of a tribe being composed by many non-related individuals. Ethnicity comes out right out of general biological commonry – cause ethnic groups are rooted in historical relationship of the group, thus being racially bound as a distinctive genetic lineage, or family. ( that’s why “Ethnic cleansing” is the name for elimination of specific genotypes ). It isn’t a clear thing either, but much more the reality of genetic commonry, as ethnic – thus cultural bounds in history were created by groups of living together in close relationship, distinct of others around. ….. nowadays it can be blurred completely out of sensible usage of these words, cause, in these modern days, especially in western nations – cultures were destroyed, ethnicities mixed ( either by shifting of the masses or search for work – my own historic countryman ( Slowakia ), just as now, and visible especially in Poles – go far for work, many times staying there for good — this is a hing, that a two or three hundred years wasn’t really a possibility ). Culture also is nowadays non-existent mostly, even if many things are perceived as ones, they have no more roots and are nowadays-world situation driven rather than of a tight, distinctive group of peoples through generations. Which, heavily, makes genetic-ideologies lately obsolete more and more.
On 12 August 1843 Dostoyevsky took a job as a lieutenant engineer and lived with Adolph Totleben in an apartment owned by Dr. Rizenkampf, a friend of Mikhail. Rizenkampf characterised him as "no less good-natured and no less courteous than his brother, but when not in a good mood he often looked at everything through dark glasses, became vexed, forgot good manners, and sometimes was carried away to the point of abusiveness and loss of self-awareness".  Dostoyevsky's first completed literary work, a translation of Honoré de Balzac 's novel Eugénie Grandet , was published in June and July 1843 in the 6th and 7th volume of the journal Repertoire and Pantheon ,   followed by several other translations. None were successful, and his financial difficulties led him to write a novel.