When did trade begin in West Africa

it was in the 15th century

The colonization of the Cape Verde Islands, from the 1460s onward, provided bases for trade with the fringes of the Mali empire. The most momentous discovery in western Africa, however, came in 1471, when Portuguese captains first reached the coast of modern Ghana between the mouths of the Ankobra and Volta rivers.

Explanation:

u.s.a

china

india

and

japan

a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )