1. Introduction.- 2. External Debt and The Balance On Current Account.- 2.1. The External Debt Position of a Single Country.- 2.2. A More Expensive Imported Raw Material and the Current Account Balance.- 2.3. The Current Account Balance as the Difference Between Aggregate Saving and Aggregate Net Investment.- 3. The Determinats of External Debt - The Basic Model of a Small Open Economy.- 3.1. The Structure of the Model.- 3.2. Determineants of the Present Value of Real Disposable Wealth.- 3.2.1. Changes in the Raw Material Price.- 3.2.2. A Change in the Level of the World Interest Rate.- 3.2.3. Influences Of Government Activity.- 3.3. Factors Determining External Debt.- 3.3.1. Changes in the Raw Material Price.- 3.3.2. A Change in the Level of the World Interest Rate.- 3.3.3. Other Factors that Influnces the Current Account Balance.- 3.3.4. Government Activity and External Debt.- 3.3.4.1. Constant Total Government Activity.- 3.3.4.2. Changes in Total Government Activity.- 3.3.4.3. The Level of Government Expenditure and Consumer Satisfaction.- Erroneous Expectations.- Summary of the Result of the Basic Model.- 4. Non-Traded Goods and the Balance on Current Account.- 4.1. The Structure of the Model.- 4.2. Determinants of the External Debt.- 4.2.1. Change in the Present Value of Available Real Wealth.- 4.2.2. Determinants of the current Account Balance.- 4.2.3. Determinants of Supply and Demand in the Market for Non-Trade Goods.- 4.3. Direct and Indirect Effects of a Change in the Raw Material Price on the Current Account Balance.- 4.3.1. Temporary Rise in the Raw Material Price.- 4.3.2. Expected Future Rise in the Raw Material Price.- 4.3.3. Permanent Rise in the Raw Material Price.- 4.3.4. The Non-Trared Good as a Pure Investment Good.- 4.4. Government Activity and the Balance on Current Account.- 4.4.1. Constant Total Government Activity.- 4.4.2. Increase in Total Government Activity.- 4.5. Labor Mobility in Period 2.- 4.6. Summary of the Results.- 5. External Debt in General Equilibrium Models.- 5.1. A Raw Material Exporting Country and a Raw Material Importing Country.- 5.1.1. The Structure of the Model.- 5.1.2. Wealth Changes in the Raw Material Exporting Country.- 5.1.3. Determinants of the Level of the World Interest Rate.- 5.1.4. The Structure of External Debt.- 5.1.5. Government Activity.- 5.2. Three Country Relationships.- 5.2.1. The Structure of the Model.- 5.2.2. Changes in Wealth.- 5.2.3. Factors Determining the Balance on Current Account in the Raw Material Importing Countries.- 5.2.4. Factors that Influence World Goods Markets.- 5.2.4.1. The Market for Good 1 in Period 1.- 5.2.4.2. The Market for Good 2 in Period 1.- 5.2.4.3. The Market for Good 1 in Period 2.- 5.2.5. Direct and Indirect Factors that Determine External Debt.- 5.2.5.1. Temporary Raw Material Price Rise.- 5.2.5.2. Expected Future Raw Material Price Rise.- 5.2.5.3. Permanent Raw Material Price Rise.- 5.2.6. Government Activity and the International Structure of External Debt.- 5.2.6.1. Temporary Increase in Government Demand for Good 1 in Country 1.- 5.2.6.2. Temporary Increase in Government Demand for Good 2 in Country 1.- 5.2.6.3. Permanent Increase in Government Demand for Good 1 in Country 1.- 5.3. Summary of the Results.- 6. An Extended Planning Horizon.- 6.1. The Structure of the Three Period Model.- 6.2. Change in Raw Materials Prices and Real Interest Rates within an Extended Planning Horizon.- 6.3. Expected and Unexpected Rises in Raw Material Prices.- 6.3.1. Expected Raw Material Price Rise.- 6.3.2. Unxpected Raw Material Price Rise.- 6.3.3. Welfare Losses from Unexpected Raw Material Price Rises.- 6.4. Inflexibilty Real Wages, Welfare and Tariffs on Imports.- 6.4.1. Inflexibility Real Wages with Unexpected Raw Materials Price Rises.- 6.4.2. Trariff and Subsidy Price with Imported Raw Materials.- 6.5. Summary of the Results.- 7. Conclusion.- Appendices.- Appendix to Chapter 3.- Appendix to Chapter 5.- Appendix to Chapter 6.