There are a variety of fundamental and technical aspects that can cause an exchange rate to move. The most notable influences include interest rates, inflation and political stability. Sometimes governments will buy or sell a currency in an effort to influence its value with the view of having a broader effect on the country’s economy. This is known as Central Bank intervention and can have a significant impact on the value of a currency. Given the size and diversity of participants there is not one single factor that can influence the forex market for any significant length of time.