The correct answer is A. The hills forced the Inca to build terraces to farm.
Explanation
The Incas were a prehispanic civilization located in South America in the current Peruvian territory. This civilization was characterized by its innovative construction methods because they developed a method to build in the mountain chain of the Andes. Indeed, their territory was characterized by many steep hills that made it difficult to build houses, ways, and farming. But Incas used rocks to build walls to hold the soil creating flat surfaces known as terraces and these were used to grow crops, built houses, among others. According to the above, the correct answer is A. The hills forced the Inca to build terraces to farm.
The American society emerged in the years that followed World War II as the world's most productive and affluent society. Dramatic demographic changes that have resulted throughout the country as a result of a booming economy and a "baby boom".
