Fiscal and monetary policy are the two main tools used by governments to manipulate their economies. However, they are dependent on the country's level of development. Developed countries usually have more flexible fiscal policies, while developing countries use more rigid and less effective forms. The reasons for this are complicated and based on the size of the country's economy (macroeconomic factors), as well as other features such as international trade integration and government effectiveness. Monetary policy is not as effective a tool in developing countries as it is in developed economies, because developing countries tend to have closed financial markets. In addition, they often have less-developed banking systems and unstable currencies which do not allow for broad quantitative easing during recessionary periods due to inflation concerns.