Which of the following are accurate statements related to slavery in the United States. Check all that apply:

Once a slave earned enough money, he was able to buy his freedom.

Slave codes were enforced beliefs that slaves were property and they could not own propery or testify in court.

The first Africans were indentured servants who were freed after a term of labor.

The slave trade was known as the Bermuda Triangle.

The thirteenth Amendment abolished slavery.