USA HISTORY

Detailed explanation-1: -The Incas built a large system of roads that went throughout their empire. The roads were usually paved with stone. Stone steps were often built into steep areas in the mountains. They also built bridges where the roads needed to cross rivers.

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: -Flattened road beds-often raised-were usually made using packed earth, sand, or grass. The more important roads were finished with precisely arranged paving stones or cobbles. Roads were typically edged and protected with small stone walls, stone markers, wooden or cane posts, or piles of stones.

Detailed explanation-4: -The Incas utilized their mountainous surrounding to maximize the efficiency of their agriculture and irrigation systems. These advances boosted agriculture not only for the Incan civilization, but the Sacred Valley of the Incas continues to be Peru’s most productive region.

Detailed explanation-5: -Since the Incan Empire was largely made up of conquered peoples, the many roads and bridges allowed for the resettlement of populations if needed, and for troops to easily access newly conquered areas.