A- John Adams? I not sure
In 1600s the planter class increasingly relied on African slaves for labor majorly because slaves were offering cheap labor now that the planters didn't have to pay for this form of labor. This led to most of them foregoing traditional indentured servants who would be paid for their labor and instead opted for African slaves.
I can give 1 but indetured servants is an optional thing people were payed but very little to do it
4: is Pakistan
3: is Asia
2: is probably parts or Europe of Kazakhstan
1:could be Afghanistan
So,try going with, 1( option A. ) as your answer
Good Luck!