At the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy. The outer core is about 1,355 miles (2,180 km) thick.
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
