not B, I think either A or D
The cotton gin made it easy for slaves to separate seeds out of the cotton. However, it it increased slave usage all over. It actually increased the use of slavery. The cotton gin just made one part of a slaves job quicker and easier.
there has been a huge decline of teen pregnancy. to avoid pregnancy people would consider abortion but birth control is a safer way to avoid the fetus from being developed yet. and safer for the mother
Answer:
Offer them power and riches if they joined peacefully. Invade them immediately with their large army.