https://socratic.org/questions/how-were-the-west-african-kingdoms-involved-in-the-slave-trade
With the development of the trans-Saharan slave trade and the economies of gold in the western Sahel, a number of the major states became organized around the slave trade, including the Ghana Empire, the Mali Empire, and Songhai Empire. However, other communities in West Africa largely resisted the slave trade.
The transatlantic slave trade began during the 15th century when Portugal, and subsequently other European kingdoms, were finally able to expand overseas and reach Africa. The Portuguese first began to kidnap people from the west coast of Africa and to take those they enslaved back to Europe
Possibly credible study of the topic that you are writing about
Among the choices posted, the best and only sensible answer is: the search for food items. The Asians who crossed the Bering Strait did not need to spread religion, to bring slaves from Africa nor the desire to conquer new peoples.
The Minoan Civilization (centered on the island of Crete)
The correct answer is the exclusionary rule.
An exclusionary rule is a law that prohibits law officials from obtaining evidence from a suspect in an illegal manner. This type of law helps to curb the power of police and their conduct, as any evidence gained in an illegal manner cannot be used against the suspect in a court of law.