During the first half of the 20th century, the United States experienced rapid growth in its manufacturing industry. It would import raw materials from developing countries, manufacture them into finished products, and then sell them back to those developing countries.
Today the U.S. has an almost reversed relationship with many of these countries, especially in Southeast Asia. The U.S. will sell these countries raw materials. These countries will manufacture them into products, and then sell them back to the U.S. For example, 80% of the manufactured products that you can buy in Walmart are made in China.
This shift in global manufacturing has occurred as a result of _______________.