The accession of Ukraine to Russia (1654) took place against the backdrop of complex social and political events associated with the desire of Ukrainians to become more independent and not depend entirely on Poland. It became clear that without the help of a powerful ally, it would not be possible to get out of the tutelage of the Commonwe alth, as a result, Ukraine was reunited with Russia. Briefly describe the causes of the historical event
The article is devoted to the review of Henry Hudson's travels and his geographical discoveries. The work describes his travels














