Most of world trade takes place among advanced nations with broadly similar endowments of factors. Many developing nations have also achieved a level of economic development that means that they too possess comparable endowments of many factors. Their workforces have the education and basic skills necessary to work in many industries. The United States, for example, certainly no longer occupies the unique position in skilled labor that it once did. Many other nations now also have the basic infrastructure, such as telecommunications, road systems, and ports, required for competition in most manufacturing industries.29 Traditional sources of factor advantage favoring advanced nations have been diminished in the process.