Peru, full machupichu

The Inca Empire, or Inka Empire (Quechua: Tawantinsuyu), was the largest empire in pre-Columbian America. The administrative, political and military center of the empire was located in Cusco in modern-day Peru. The Inca civilization arose from the highlands of Peru sometime in the early 13th century.
From 1438 to 1533, the Incas used a variety of methods, from conquest to peaceful assimilation, to incorporate a large portion of western South America, centered on the Andean mountain ranges, including, besides Peru, large parts of modern Ecuador, western and south central Bolivia, northwest Argentina, north and central Chile, and southern Colombia into a state comparable to the historical empires of Eurasia.
The official language of the empire was Quechua, although hundreds of local languages and dialects of Quechua were spoken. The Inca referred to their empire as Tawantinsuyu which can be translated as The Four Regions or The Four United Provinces.
There were many local forms of worship, most of them concerning local sacred "Huacas", but the Inca leadership encouraged the worship of Inti—the sun god—and imposed its sovereignty above other cults such as that of Pachamama. The Incas considered their King, the Sapa Inca, to be the "child of the sun."
The Inca referred to their empire as Tawantinsuyu, "four parts together." In Quechua the term Tawantin is a group of four things (tawa "four" with the suffix -ntin which names a group). Suyu means "region" or "province". The empire was divided into four suyus, whose corners met at the capital, Cusco (Qosqo). The name Tawantinsuyu was, therefore, a descriptive term indicating a union of provinces. The Spanish transliterated the name as Tahuatinsuyo or Tahuatinsuyu which is often still used today.
The term Inka means ruler, or lord, in Quechua, and was used to refer to the ruling class or the ruling family in the empire. The Spanish adopted the term (transliterated as Inca in Spanish) as an ethnic term referring to all subjects of the empire rather than simply the ruling class. As such the name Imperio inca (Inca Empire) referred to the nation that they encountered, and subsequently conquered.
The Inca people were a pastoral tribe in the Cuzco area around the 12th century. Under the leadership of Manco Cápac, they formed the small city-state Kingdom of Cuzco (Quechua Qusqu'Qosqo). In 1438, they began a far-reaching expansion under the command of Sapa Inca (paramount leader) Pachacuti-Cusi Yupanqui, whose name literally meant "earth-shaker". The name of Pachacuti was given to him after conquering over the Tribe of Chancas (modern Apurímac). During his reign, he and his son Tupac Yupanqui brought much of the Andes mountains (roughly modern Peru and Ecuador) under Inca control.   

Machu Picchu, Quechua: Machu Pichu, "Old Peak") is a pre-Columbian 15th-century Inca site located 2,430 metres (7,970 ft) above sea level.  Machu Picchu is located in the Cusco Region of Peru, South America. It is situated on a mountain ridge above the Urubamba Valley in Peru, which is 80 kilometres (50 mi) northwest of Cusco and through which the Urubamba River flows. Most archaeologists believe that Machu Picchu was built as an estate for the Inca emperor Pachacuti (1438–1472). Often referred to as the "Lost City of the Incas", it is perhaps the most familiar icon of the Inca World.
The Incas started building the "estate" around AD 1400, but abandoned it as an official site for the Inca rulers a century later at the time of the Spanish Conquest. Although known locally, it was unknown to the outside world before being brought to international attention in 1911 by the American historian Hiram Bingham. Since then, Machu Picchu has become an important tourist attraction. Most of the outlying buildings have been reconstructed in order to give tourists a better idea of what the structures originally looked like. By 1976, thirty percent of Machu Picchu had been restored. The restoration work continues to this day.
Since the site was never known to the Spanish during their conquest, it is highly significant as a relatively intact cultural site. Machu Picchu was declared a Peruvian Historical Sanctuary in 1981 and a UNESCO World Heritage Site in 1983. In 2007, Machu Picchu was voted one of the New Seven Wonders of the World in a worldwide Internet poll.
Machu Picchu was built in the classical Inca style, with polished dry-stone walls. Its three primary structures are the Intihuatana (Hitching post of the Sun), the Temple of the Sun, and the Room of the Three Windows. These are located in what is known by archaeologists as the Sacred District of Machu Picchu. In September 2007, Peru and Yale University almost reached an agreement regarding the return of artifacts which Yale has held since Hiram Bingham removed them from Machu Picchu in the early 20th century. In November 2010, a Yale University representative agreed to return the artifacts to a Peruvian university.

history of Peru- Inca civilization

The first step in the expansion of the Inca Empire was the defeat of the Hanan Chankas, a group that lived in the departments of Ayacucho and Huancavelica, near Cuzco. That allowed them to control a large territory around Cuzco and incorporate its population into its army. The expansion continued to the Lake Titicaca region where they allied with the Lupaca ethnic group to defeat the powerful Hatun Colla. The Incas had a special interest to control this region due to their abundant natural resources. After his military victory, Inca Pachacuti rebuilt Cuzco.

In 1438 AD, under the command of Sapa Inca (paramount leader) Pachacuti, much of modern day southern Peru was conquered. Cuzco was rebuilt as a major city and capital of the newly reorganized empire. Known as Tawantinsuyu, it was a federalist system, consisting of a central government with the Inca at its head and four provincial governments with strong leaders: Chinchasuyu (NW), Antisuyu (NE), Contisuyu (SW), and Collasuyu (SE). The powerful Inca emperor is also thought to have built Machu Picchu, either as a family home or as a vacation retreat.

The Incas conquered a vast territory using reciprocity or alliances. Pachacuti would send spies to regions he had wanted in his empire. They would then report back on the political organization, military might, and wealth. The Sapa Inca would then send messages to the leaders of these lands, extolling the benefits of joining his empire. He offered gifts of luxury goods like high quality textiles,coca leaves and mullu and promised that all living in those territories would be materially richer as subject rulers of the Inca. Most accepted the rule of the Inca as a fait accompli and acquiesced peacefully. The neighboring rulers' children would be brought to Cuzco to be taught about Inca administration systems, and then would return to rule their native lands. This allowed the Inca to indoctrinate the former rulers' children into the Inca nobility, and, with luck, marry their daughters into families at various corners of the empire. If they did not accept the alliance they used force to subdue the tribe and since the Incas had a more powerful military force they always succeeded. The local leaders were executed to secure loyalty among the population.