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 ХVIII<sup>th</sup> - the first half of the ХIХ<sup>th</sup> 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.