Don Leonard

Don Leonard, PhD is an Assistant Professor of Practice in City and Regional Planning at The Ohio State University.

US manufacturing jobs (millions), 1939-2019

The three greatest external shocks to US manufacturing employment in the last 100 years were the Great Depression of the 1930s, America’s entry into World War II in 1941, and China’s entry into the World Trade Organization (WTO) in 2001. ...

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