Answer:
1. The Portuguese establish sugar plantations on islands off the coast of West Africa;
2. Portuguese laborers are unwilling to leave their homeland;
3. The Portuguese bring in slaves to work on their plantations;
4. Other European countries also start purchasing enslaved Africans;
The Portuguese didn't really investigated the situation about the labor force before they make sugar plantations, so they set them up, and it turned out that the Portuguese people are not willing to come and work on them, so they were left with plantations without laborers. Since they didn't wanted this investment to be for nothing, they started buying African slaves from some of the stronger tribes that were keeping slaves. They used them as labor force afterwards, and saw the long term benefit of it, so started to purchase more and more slaves. After the word spread out, and also after the other European countries started to have colonies, they too started to purchase African slaves, thus making it a huge business for both, them and the stronger African tribes that were selling the slaves to them.
Explanation:
Your answer would be Aryabhatta. Hope this helps!
<span>Joseph Ephraim Casely Hayford observed that
it is basically the instinct of the primitive man that works in the society, no
matter what the scope of their bragged civilized nation. Based from Hayford, the
civilized nations of our world are now comparable to primitive man, different universal
courts of negotiation will be more regularly be seeing in one capital in Europe,
and the not so strong country will have slight peacetime, if not slight fairness.</span>
The answer is Hatsheput. Hope this Helps:)