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.
Fifteen years after the collapse of the Soviet Union, "U.S.-Russia relations are clearly headed in the wrong direction," finds an Independent Task Force on U.S. policy toward Russia sponsored by the Council on Foreign Relations. "Contention is crowding out consensus. The very idea of a 'strategic partnership' no longer seems realistic," it concludes.
Foreign country I believe