National territory refers to the area under the sovereignty of a country, including what?

Including a country's land, rivers, lakes, inland seas, territorial waters and their riverbeds, subsoil and upper and lower areas.

The origin of this territory can be traced back to BC. Tribes have their own farmland and scope of activities, and the class system has begun to form, gradually forming a sphere of influence. The sphere of influence is the control area of a tribe, and the basic concept of territory is formed. Later, the sphere of influence was transformed into territory, the tribe was transformed into a country, and the leader was transformed into an emperor or monarch. The territory was formally formed and became a symbol of the country.

At the beginning, the definition of territory was vague and the boundary was unclear, so it was difficult to examine the actual territory of the country. It was not until hundreds of years ago that the territorial boundaries gradually became clear.