If Africans waged war against other nations, the other nations that won would enslave the people and sell them on the market. If they waged war between themselves, the stronger tribes would enslave the weaker tribes and sell them to the slave market even though they are more or less neighbors.
Who was sold into enslavement after a local or tribal war?
Answer: African were sold into enslavement after a local or tribal war. There were slaves in africa even before the white man came. It was most visible after the war was over and the conqueror was decided.
If you are in the 10th grade of the Indian education system, that'll mean that you are about 15 years old. In India, children of about 14 - 15 years of age usually enter 10th grade. In UK, this will be known as the Sophomore year / Year 11 → kids of age 15 - 16 years.
Dr. Azure is conducting a research in the area of psychophysics. Psychophysics is described to be a branch of psychology where it deals with the relationship of a mental phenomena and as well as the physical stimuli that Dr. Azure is doing above in the scenario.