USA HISTORY

Detailed explanation-1: -Much of the system was the result of the Incas claiming exclusive right over numerous traditional routes, some of which had been constructed centuries earlier, mostly by the Wari empire in the central highlands of Peru and the Tiwanaku culture.

Detailed explanation-2: -Andean Road System The Incas built more than 18, 600 miles/30, 000 km of paved roads in the most rugged terrain in the world. These roads and all the Inca and pre-Inca infrastructure along them are protected by UNESCO World Heritage Sites since 1994.

Detailed explanation-3: -Yet the Incas, and the civilizations before them, coaxed harvests from the Andes’ sharp slopes and intermittent waterways. 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.

Detailed explanation-4: -Key Takeaways: The Inca Road Road construction began in the mid-fifteenth century when the Inca gained control over its neighbors and started expanding their empire. The construction exploited and expanded on existing ancient roadways, and it ended abruptly 125 years later when the Spanish arrived in Peru.

Detailed explanation-5: -The Inca Road Network Inca roads covered over 40, 000 km (25, 000 miles), principally in two main highways running north to south across the Inca Empire, which eventually spread over ancient Peru, Ecuador, Chile, Bolivia, and Argentina. One highway ran down the coast, and the other wound through the highlands.