Macroeconomics is the study of the aggregate​ (or total) effects on the national economy and the global economy of the choices that​ individuals, businesses, and governments make. ​"US Set to Rethink​ Fed's Role" is a macroeconomic topic because it concerns the Fed. The Fed is in charge of U.S. monetary policy. ​"Economists Foresee Protracted​ Recovery" is a macroeconomic topic because it concerns the recession in the national and global economy. Microeconomics is the study of the choices that individuals and businesses make and the way these choices interact and are influenced by governments. ​"Wal-Mart Makes Electronics​ Push" is a microeconomic topic because it studies an issue that concerns one businesslong dash—​Wal-Mart. ​"VW, Porsche Take Break in​ Talks" is a microeconomic topic because it studies an issue that concerns the decisions of two businesses.