Answer:i think its the last one
Explanation:For their city to endure, the Inca had to find a way to keep it from sliding down the mountain. Perhaps the most visually striking features of the drainage system are the agricultural terraces. Machu Picchu includes 4.9 ha of agricultural terraces, which are held in place by stone retaining walls.
The treaty allowed for the US to give Spain 5 million dollars in exchange for the US to gain ownership of Florida and the western territory of California
let me know if you need anything else
:)
This practice is known as the SPOILS SYSTEM.
Please mark brainliest as that would really help out :3
