The correct answer is - currency.
The objects or group of objects that have been widely agreed upon to be used a s form of exchange is called currency. The currency is a very useful method for exchanging things, and it has been widely accepted around the world, with some currencies being globally accepted, while some only regionally, or locally.
The reason why the currencies have been introduced is so that the two or more sides in the process of exchange have the same means and valuations, thus making the exchange very easy. Some of the strongest currencies in the world are the American Dollar, Euro, British Pound, Swiss Frank...
Answer:
First question: The United Nations issued a hybrid United Nations-African Union mission (UNAMID) to maintain peace in Darfur. It was established on 31 July 2007 with the adoption of Security Council resolution 1769. However, it formally took over on 31 December 2007.
Second question: As said above, international countries attempted to mediate peace in Darfur and helped. There is still conflict in the Darfur region but it is much lower than before and has grown much more stable.
Explanation:
Had been explained above.
Water covers 71 percent of the earth’s surface!
Answer:
It might be number 1 but sorry if I'm wrong
Explanation: