Answer: The Incan emperors forced the conquered people to speak Quechua, which is the Incan lanquage.
Explanation: The Inca empire was the largest empire in pre-Columbian America and their civilization arose from the Peruvian highlands sometime in the early 13th century. They were conquerors who employed different methods to unify their empire.
In addition to forcing them to use the Inca language, rebellions were avoided by transporting conquered peoples to different parts of the empire thereby averting would-be rebellions.
They had an advanced system of roads that held and linked the empire together, with some of their roads, walls and irrigation systems still in use till date. These were mostly done using mit'a which was the system of conscripting labor from villages.
Answer:
Economics is the study of how humans make decisions in the face of scarcity.
Explanation:

i think it is A but i'm not sure i hope it is right for you
From the year 1760 until the early 1770s, settlers were more and more opposed to British imperial policies; and something in common that affected everyone alike, tax policies and border policies. When the Colonists' protests failed to persuade the British to change their policies; and on the contrary, Great Britain ordered the closure of the port of Boston, and made use of martial law in the city of Massachusetts, the governments of the 13 Colonies sent delegates to a Continental Congress to summon to a colonial boycott of the British goods. Thus, taxes and border restrictions were common conflicts that all settlers suffered