“…Manning (2011) also discussed how the idea that denser labor markets are more competitive can explain some aspects of economic geography, notably agglomeration (Manning 2010), so has an important impact on spatial inequalities. Hirsch, Jahn, Manning, and Oberfichtner (2019) provided additional evidence for this view. More generally, Webber (2015) found more monopsony power in lower-wage labor markets, which would lead to greater inequality in wages than marginal products.…”