The answer is B) Inca. Extensive road network across plains, deserts and mountains reaching all corners of the empire was one of the notable features of the Inca empire like terraced farming, canals, crop rotation and irrigation as agricultural innovations. It allowed smooth military operations, trading, and the use of runners or chasquis.
Answer:
1, 2: there are no taxes on brought in gods, the money, the workforce and the goods can stream within the borders of the EU freely and in this way the whole EU is more competitive in an international level
3,4:the western part of the EU more developed due to the inherited capitalist economy and Marshall plan by the USA, while the post communist more backward because of the ex communist industrial economy and because of the fact that they had to change to capitalist
Not all the countries have euro within the EU just the more developed nations with few exceptions like Sweden and therfore the EU is not united in this front as well
