This document discusses foreign direct investment (FDI) and factor mobility in international business. It defines FDI as investment that gives the investor controlling interest in a foreign company. Short-term capital is the most mobile factor of production as it can move quickly between countries to seek higher returns. FDI allows companies to control foreign operations to best serve their global objectives, lowering costs and increasing technology transfer. Companies pursue FDI for sales expansion, acquiring resources, and minimizing competitive risks. They may expand abroad through building new facilities or acquiring existing foreign companies.