This article contains a lot of information regarding the irrigation systems in Khiva Khanate, collected by the military expedition under the command of Captain A.P. Bekovich-Cherkassky, who came in the 18th and the first half of the 19th century, the expeditions led by the Russian engineer Nazimov,...

In this paper looked through the methodology of teaching the subject of history, highlighting historical themes in scientific papers, as well as matters of research methods....