Part II: the beginning, the development of transport routes (2537 (1994)-2547 (2004)) during the third. Development and expand the range of transport routes (2548 (2005)-2557 (2014)) and four full-range development (2558-current)
The second period started developing transport routes (2537-2547 BC) during the third period of development and expansion of transit routes (2548-2557 BC) and the fourth. The fully developed (BE 2558- present).
The second, the development of transportation routes (the 2537-2547) during the third, the development and expansion of transportation routes. 2548-2557) and the fourth, the full development of 2558 - present).