Of the 10 to 16 million Africans who survived the voyage to the New World, over one-third landed in Brazil and between 60 and 70 percent ended up in Brazil or the sugar colonies of the Caribbean. Only 6 percent arrived in what is now the United States. Yet by 1860, approximately two thirds of all New World slaves lived in the American South.

For a long time it was widely assumed that southern slavery was harsher and crueler than slavery in Latin America, where the Catholic church insisted that slaves had a right to marry, to seek relief from a cruel master, and to purchase their freedom. Spanish and Portuguese colonists were thought to be less tainted by racial prejudice than North Americans and Latin American slavery was believed to be less subject to the pressures of a competitive capitalist economy.

In practice, neither the Church nor the courts offered much protection to Latin American slaves. Access to freedom was greater in Latin America, but in many cases masters freed sick, elderly, crippled, or simply unneeded slaves in order to relieve themselves of financial responsibilities.

Death rates among slaves in the Caribbean were one-third higher than in the South, and suicide appears to have been much more common. Unlike slaves in the South, West Indian slaves were expected to produce their own food in their “free time,” and care for the elderly and the infirm.

The largest difference between slavery in the South and in Latin America was demographic. The slave population in Brazil and the West Indies had a lower proportion of female slaves, a much lower birthrate, and a higher proportion of recent arrivals from Africa. In striking contrast, southern slaves had an equal sex ratio, a high birthrate, and a predominantly American-born population.

Slavery in the United States was especially distinctive in the ability of the slave population to increase