The British would sell Slaves to slave traders or the Captains of ships for money or goods.
The slaves where transported through the Triangular Trade and sold to other countries. The slave were kept in unsanitary and dangerous conditions. They were chained down the entire trip.
Put to Work
The Middle Passage is the process of transportation. The slaves are kept on boats with way more people than allowed. They are being abused and starved on this long journey. Many slaves do not survive this part.
Mercantilism was popular back in the 1700's. This is when people believe in the benefits of profitable trading.
The Colonies that traded for the slaves put them immediately to work. Slaves were working vigorous hours in sugar cane fields, they hardly got any rest. After one job was finished, another was started.
The economy need slave trade to stay on top. Some men were fighting for the slaves, but Great Britain was afraid of ending the slave trade. If they ended slave trade, France would take over and the British economy would go down.