Answer:
"What we call a triangle was really as round as the globe."
Step-by-step explanation:
This is the quote that best supports the author's claim and purpose. The author wants us to know that the Triangle Trade was not really a triangle. Instead, it was a complex net of connections that spanned the whole world. During this century, almost every region of the world was engaged in trade in some way or another, including the Philippines, Latin America, India, France, England, the Netherlands, Spain, North America and Africa. Therefore, this trade was not triangular, but instead was as round as the globe.