For example Poland, which is a Slavic country, has a strong genetic compound of Van/Vandals. Many Vans moved there from Scandinavia. Interestingly, this strong tribe of Vans was “Hari Vamsa” in Vedic literature. Vans, in fact, wrote Hari Vamsa. Ancestors of modern Hindis forgot original Sanskrit (spoken in India 1800-1500- 1000BC) but it was the language used by Aryans, also Proto-Slavic people, in Europe. ;)