The correct answer is D (defeated soldier). After a local or tribal war, defeated soldiers were sold into enslavement. What it suggests, is that, slavery had been present in Africa before the Europeans went there. Though it is different than what we usually generalize as "Slavery". Slavery after a tribal war was considered better than European slavery.
The correct option is C
The technical changes related to cotton textiles, the iron industry and the introduction of steam power are at the core of the so-called industrial revolution in Great Britain, but they were not the only industries that underwent so many changes. In the same way, not all of them demanded the use of mechanical energy. At the same time that James Watt was perfecting the steam engine, his illustrious compatriot Adam Smith related in Wealth of Nations the great increase in productivity obtained in a pin factory simply with the specialization and division of labor. In some aspects, Smith's pin factory can be considered as an emblem of the various industries dedicated to the production of consumer goods.
An example of a primary source is George Washington’s diary. Another primary source would be a letter written home by a soldier in the Revolutionary War. Another example of a primary source is Einstein’s lab notes.
The Enlightenment was similar to the Scientific Revolution because many educated Europeans used observation and logic of the Scientific Revolution. What made it different was that they applied it to human life.
Sorry if that didn’t help I’m still not used to answering questions on Brainly