Capital formation is the process of increasing a country's capital assets through investing in productive infrastructure and equipment. This promotes economic development by raising productivity, technological progress, and standards of living. In developing countries, capital formation relies on both domestic and external resources. Domestically, capital comes from voluntary savings, involuntary savings (e.g. taxes), government borrowing, and utilizing idle resources. Externally, foreign economic assistance such as loans and grants are important sources of capital that help bridge savings gaps, increase employment and productivity, and provide access to new technologies. While necessary, capital alone is not sufficient for development - other factors like education, government effectiveness, and social attitudes also significantly influence economic progress.