This is a trading forum and I have a one track mind: To make money trading.However the money was issued it is traded on an exchange so the value is the price that the market sets. You would therefore trade the currency at the price the market is willing to buy or sell the currency for.
There will be various factors that impact the currency price, for example if a country's government debt increases it is likely a trader will foresee there will be an increase in taxation in the future which will have a dampening effect on the currency's value.
The important aspect is the currency has been issued with a certain set supply and then it is traded on an exchange. The price will alter for various reasons like the example above, it will also alter if the supply of the currency changes.
The currency is now a commodity and behaves like a commodity. Any action taken by the government that alters its trading price will impact the nation's ability to buy and sell goods internationally.
So it is important when a currency is traded on an exchange to balance the economy's debt and hit economic targets. When the targets are not met or large deficits occur the price of the currency will likely fall.
When the currency began to be traded on an exchange the nation's economic output and performance became a factor in the currencies pricing on the Forex exchange. When there are bad results or disequilibrium the currency will be negatively impacted.
I am speaking as a currency trader, trading foreign currency for a living. What should I watch out for in order to make money if your thesis is the correct one?