In Puerto Rico it was useful, in Cuba not so much. Cubans perceived the outcome as occupation and didn't want to have United States occupation in their country. Puerto-Ricans had a form of a civilian government with independence and Puerto-rican citizenship but the country belonged to US.
The correct answer <em>is a Terrace</em>.
A farmer living on the edge of a steep mountain that would like to increase the number of crops he can grow, can build a terrace, one Inca advancement that could be of the most use for him.
The region of the Andes is a place where the tallest and difficult to access mountains exist. However, the Incas developed intelligent ways to harvest crops to take advantage of the steepest areas in the high mountains. They built terraces, cisterns and irrigation canals in the form of “s” or snakes in the slopes to angled down around the hills and mountains. The terraces covered thousands of hectares in ancient Peru, where Incas grew potatoes and corn.
Edwards was a philosopher and minister who held a sermon during the great awakening that warned sinners that they were going to hell unless they repented and asked god for mercy. I believe his sermon was called “Sinners in the Hands of an Angry God”
