Brekhunenko V. Relations between the Eastern's Cossack formations in the 16 th - the middle of the 17 th Centuries

The thesis is a study of the soursces, grounds, principles of functioning, main content of relations, potential of their inter-cossack influence. A fierst conception of the begining of the relations between the Volga, Hrebinka, Don, Terek, Ukrainian and Jaik Cossack formations in the 16 th - the th Centuries. It is cleared up that inter-cossack relations were the importent separete factor. Withstanding between Moscow and Poland jn the one hand and Turkey, Crimea, Nohay on the other, the global rivalry Moscow and Poland for the Eastern Europe gegemony, the Ukrainian question, the Turkish-Crimean contradictions, the Caucasus policy of Moscow were a sphere of the mighty influence of the inter-cossack relations.