Lower Classes in Inca society was responsible for the physical construction of roads and bridges.
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Answer:
The French navy served as an invaluable ally to the fledgling American fleet and French land forces helped win the decisive battle of the war—victory at Yorktown. Like France, Spain provided aid to the colonists in the form of funding, as well as by fighting Britain on a second front.
Explanation:
Read it in a article. My apologies if im wrong.
The correct answer is slavery
Slavery, is the social practice in which a human being acquires property rights over another called a slave, to whom this condition is imposed by force.
In some societies, since the most distant times, slaves were legitimately defined as a product. Prices changed according to physical conditions, professional skills, sex, age, origin and destination.
When we speak of slavery, it is difficult not to think of the Europeans who overcrowded the holds of their ships of men brought from Africa regardless of their wills and who were put up for sale in an inhuman and cruel manner throughout America.