Machu Picchu is an Inca citadel located in the Cusco Region of Peru, South America. It’s one of the most famous and mysterious sites in the world.

The construction of Machu Picchu is believed to have begun in the 1450s, during the reign of Inca Emperor Pachacuti.

The Incas built extensive agricultural terraces, which were used for farming and agriculture.

The Incas cut and fitted stones together with incredible precision, with some joints as small as 1/50th of an inch.

The Incas used the mit’a system, a form of labor taxation, to recruit workers from nearby villages and towns.

Some researchers believe that the Incas gradually abandoned Machu Picchu over a period of time, as the population declined and the empire weakened

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