Which of the following are located outside the nucleus of an atom? Select all that apply.
Electrons
Protons
Neutrons
Nonsense! None of these are located outside the nucleus of the atom.

The correct answer is B) converting currencies makes it possible for nations to buy and sell goods with each other.

It is important for nations to have a system to convert one type of currency to another because converting currencies makes it possible for nations to buy and sell goods with each other.

Nations need trade to improve their economies. Bt every nation has its own currency and this is the reason why an internationally current system is needed to trade goods. The US dollar is one of the most common currencies used in trade, as well as the Euro, the currency of the European Union. These currencies are accepted worldwide, and each country that trades with them, convert the value of its currency to Us dollars or Euros.