During the early 14th century the Inca Kingdom and their neighboring Tribes and Kingdoms were at war with each other over power and resources...Later under Emperor Pachacuteq he reorganized the kingdom of Cusco into an empire. Pachacuteq along with his Nobles and engineers converted his empire to a new governmental system called "Tahuantinsuyo" and brought free trade, new road systems, architecture and new agriculture practices fitted for mountainous terrain. In this system there was a federal government and four provincial government. Head of the federal system was Emperor "Inca". And head of the other provincial government was Inca nobles. Pachacuteq is also known to be the creator of Machu Picchu.
Here the video to enjoy every part of Cusco and Machu Picchu.