SOWELL MIGRANT OCEANIC CONDITIONS

He is a big globalist, advocate for moving human capital around as much as can be.

But his material yields important aspects that tell against other stories told now. 

He deals extensively with indentured servitude under the Index topic Contract labor.

See Migrations and Cultures,  Changes in Transportation, p 38, to get a sense of the numbers perishing and the conditions of migrants on ships in the 17th through 19th Centuries.