Druzhkin Alexandr A. RussiaSaratovSaratov State University, 83 Astrakhanskaya St., Saratov 410012, RussiaPostgraduate Student at the Department of Russian History and Archaeology al.druzhkin-409@mail.ru Author's articles The main trends of socio-economic development of the newly formed uyezds in the Khoper River Region (Prikhoperye) in the late XVIII and the first third of the XIX centuries