What is the best estimate of the number of Africans shipped across the Atlantic between 1450 and 1850? AP World History Chapter 20 What is the best estimate of the number of Africans shipped across the Atlantic between 1450 and 1850? a. 8 million b. 20 million c. 12 million d. 10 million e. 14 million Answer: C Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+