USA HISTORY

Detailed explanation-1: -The Inca often irrigated these terraces by using water melting from nearby glaciers. The Inca transported this freshly melted water to crop fields by building irrigation canals to move the water and cisterns to store the water.

Detailed explanation-2: -They developed resilient breeds of crops such as potatoes, quinoa and corn. They built cisterns and irrigation canals that snaked and angled down and around the mountains. And they cut terraces into the hillsides, progressively steeper, from the valleys up the slopes.

Detailed explanation-3: -terrace cultivation, method of growing crops on sides of hills or mountains by planting on graduated terraces built into the slope. Though labour-intensive, the method has been employed effectively to maximize arable land area in variable terrains and to reduce soil erosion and water loss.

Detailed explanation-4: -The Incas had to create flat land to farm, since they lived in the mountains. They did this by creating terraces. Terraces were carved steps of land in the mountainside. Not only did this genius way of farming help them grow crops, it was also great for irrigation and preventing drought.

Detailed explanation-5: -Built without the use of wheels, hundreds of men pushed the heavy rocks up the steep mountain side. Structures at Machu Picchu were built with a technique called “ldquo ashlar.” Stones are cut to fit together without mortar.