The Andean Civilizations, primarily represented by the Inca Empire, flourished in the mountainous regions of South America, particularly in present-day Peru, Bolivia, and Ecuador. These societies are known for their advanced agricultural techniques, impressive architectural achievements, and complex social structures. The Incas, the most prominent of these civilizations, built a vast empire that extended along the Andes mountains. They developed a sophisticated network of roads and communication systems, which facilitated trade and cultural exchange across diverse regions. Their legacy continues to influence the culture and history of the Andean region today.