Slavery and Human Trading in The bible

Verses from the bible that proves that slavery and human trafficking is allowed in the bible :

Exodus 21:7-11
""If a man sells his daughter as a servant, she is not to go free as male servants do.
If she does not please the master who has selected her for himself, he must let her be redeemed. He has no right to sell her to foreigners, because he has broken faith with her.
If he selects her for his son, he must grant her the rights of a daughter.
If he marries another woman, he must not deprive the first one of her food, clothing and marital rights.
If he does not provide her with these three things, she is to go free, without any payment of money."

Leviticus 25:44-46

"Your male and female slaves are to come from the nations around you; from them you may buy slaves.
 You may also buy some of the temporary residents living among you and members of their clans born in your country, and they will become your property.
 You can bequeath them to your children as inherited property and can make them slaves for life, but you must not rule over your fellow Israelites ruthlessly."

Exodus 21:20-21
"Anyone who beats their male or female slave with a rod must be punished if the slave dies as a direct result.
but they are not to be punished if the slave recovers after a day or two, since the slave is their property."

Deuteronomy 15:12-18
"If a fellow Hebrew, man or woman, is sold to you, he shall serve you six years, and in the seventh year you shall set him free. When you set him free, do not let him go empty-handed: Furnish him out of the flock, threshing floor, and vat, with which the Lord your God has blessed you. Bear in mind that you were slaves in the land of Egypt and the Lord your God redeemed you; therefore I enjoin this commandment upon you today.
But should he say to you, ‘I do not want to leave you’ for he loves you and your household and is happy with you–you shall take an awl and put it through his ear into the door, and he shall become your slave in perpetuity. When you do set him free, do not feel aggrieved; for in the six years he has given you double the service of a hired man. Moreover, the LORD and your God will bless you in all you do."