Explain how state and national boundaries follow both natural features and human-made lines

The answer is They are not the same as the city, state, or national limits since they are not set by laws. Actually, districts can be founded on a wide range of qualities. Districts can be founded on major land forms found in a given region. Districts can likewise be founded on what the general population there improve the situation a living or on what dialect is talked there. Not at all like urban communities, states, and countries, most areas are not set apart with signs.  

Explanation:

Three basic sorts of locales are formal districts, which are characterized formally by the administration or different structures, for example, urban areas, states, and mountain ranges; utilitarian areas, which comprise of a focal place and the encompassing regions that are reliant upon that place, for example, a metropolitan region; and vernacular. Area can be total or relative. Supreme area gives a clear reference to find a place. The reference can be scope and longitude, a road address, or even the Township and Range framework.

The goal of the Marshall plan is to prevent the spread of communism in Western Europe .