Briefly define the four dimension of globalization.

Globalization has four major dimensions. International trade refers to the cross-border flow of goods and services; in other words, imports and exports. Foreign direct investment refers to the cross-border flow of multinational corporation investment, purchasing or establishing foreign subsidiaries and joint ventures. International investment portfolios are the cross-border flow of investment securities whereby investors buy foreign stocks and bonds but do not control foreign enterprises. Finally, immigration refers to the cross-border flow of people who are migrating from one country to another.