TRADE INFRASTRUCTURE FORMATION IN BAIKAL SIBERIA IN THE SECOND HALF OF THE ХVIII<sup>TH</sup> - THE FIRST HALF OF THE ХIХ<sup>TH</sup> CENTURIES
The article is devoted to the analysis of the processes of internal trade relations formation in Baikal Siberia of the ХVIIIth - the first half of the ХIХth centuries. It presents the data about the basic trade forms development, first of all, about fairs, about regional relations enhancing and gradual growth of store-shop trade. Special attention is paid to trade relations influence on market infrastructure formation in the region manifesting in creating business quarters and selling spaces in the region towns.