Common Cause of a Delayed Period. There are also extremely common causes for a period two weeks late with a negative pregnancy test. Stress is one of the most dominant causes to consider when there is a delay in a period.
In conclusion, currency values are determined by many factors. Not just one issue, but a composite of many must be considered. In trading currencies, such as in FOREX, trades are usually made in pairs. Values must be relative to something. So how is a country doing relative to another country is also significant. Common Forex pairs are US dollar and Japanese yen, Euro and US dollar, for example. These and other factors determine the value of a currency. Some are tangible, some intangible.
A country that uses the gold standard sets a fixed price for gold and buys and sells gold at that price. That fixed price is used to determine the value of the currency. For example, if the U.S. sets the price of gold at $500 an ounce, the value of the dollar would be 1/500th of an ounce of gold.