The inflow of Slavic slaves by Rus or Swedish Vikings into Byzantine empire made the etymology of Slave be the same as the demonym for the name of the entire ethnic groups Slavs. Thousand upon thousands of Slavs were enslaved by the Rus. Making it probably the time in Swedish history when the slave trade flourished the most. Byzantine empire imported a gigantic amount of Slavic slaves for different purposes. The Svitjod nations prosperity during the Viking age was founded upon human trafficking of Slavic and British slaves. Ibn Fadlan describes how the Rus cruelly sacrificed a slave girl to her dead master.