Who did equiano believe were responsible for sailing him to the white men at seacoast?

Chiefs native to his homeland willingly sell their own people to slave traders.

"Such a mode of obtaining slaves in Africa is common; and I believe more are procured this way, and by kidnapping than any other. When a trader wants slaves, he applies to a chief for them, and tempts him with his wares. It is not extraordinary, if on this occasion he yields to the temptation with as little firmness, and accepts the price of his fellow creatures liberty with as little reluctance, as the enlighteded merchant."