Foreign coins usually cannot be used in other countries. You can cash in foreign coins, but you usually only get a fraction of the value when you do.
foreign affairs
Coins are not usually silver these days. Since the 1960s they have been made of copper and nickel. Silver coins from before 1965 in the US were 90% silver. Foreign countries have used anything from 40% to 92.5% silver in their coins, but to my knowledge, no one has used pure (100%) silver in currency.
Alliances are most commonly economic or military. Countries develop foreign relations with other countries and form alliances. They're kind of like cliques who form a group to protect each other and help each other.
One synonym for the word "foreign" is "international." This term is often used to describe things that are from or relate to other countries.
Not officially. However, the Mint has struck coins for other countries over the years. There have been many instances where a blank (technically called a "planchet") for a foreign coin accidentally got mixed in with blanks for U.S. coins and was struck with an American design, resulting in a planchet error.
The disadvantages of foreign aid is that it can be used certain countries. Other people therefore refer to it as one form of neo-colonialism. The other disadvantage is that it increases the debt of a given country.
Éire is the Irish name for Ireland. If the coins are Euro coins, they can be used in Ireland and other Eurozone countries. The Eurozone countries are Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Malta, the Netherlands, Portugal, Slovakia, Slovenia, and Spain. The Euro came into use in 2002. If they are coins from before 2002, then they are no longer legal tender in Ireland, and cannot be used in any other country.
foreign currency just refers to the money used in other countries. For instance, in America, Chinese money is foreign currency.
They were intended to be used in Asia to compete with coins of other countries for trade, hence the name Trade Dollar.
The Netherlands use the euro as their currency so they have the same coins as all other eurozone countries, denominated in cents and euros. Prior to 2002, the Netherlands used their own currency called the guilder.
In foreign countries, goat milk is commonly used for making cheese, yogurt, and other dairy products. It is also consumed as a beverage and used in traditional and cultural dishes. Additionally, goat milk is valued for its nutritional benefits and is often preferred by those with lactose intolerance.
This brings in foreign currency that can be used for purchasing other goods that are not available or too expensive in Australia.