Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Oct 31;68(11):854–860. doi: 10.1093/biosci/biy119

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2018. Published by Oxford University Press on behalf of the American Institute of Biological Sciences.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

PMC Copyright notice

Figure 3. — Quantitative depiction of Portuguese slave trade. The thickness of the arrows is proportional to the number of native Africans transported. From Eltis and Richardson (2010), used with permission.