Forex

Foreign currency can be explain in simple term as valas, this is because that currency is not used in the country,for example, in Indonesia country, we can say that American dollars as a valas or foreign currency, and opposites. So wen can conclude that valas or foreign currency is a currency that used in another country, beside the real major currency that have used in that country(the belong country currency)

As a currency that have been used now in all the financial transactions, there are known as strong currency( called Hard currency) and a relatively weak currency(called Soft currency).
In Hard currency, at general is belong by forward country like American dollars(USD),Euro(EUR),Yen JApan(JPY), and many more. In Soft currency, at general is belong by developing country, like Indonesia (Rupiah), baht Thailand, anda many more.