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It had a complex stratified vertical society governed by the Inca and his relatives.
They shared a common polytheistic religion based on the worship of the Sun and the Sapa Inca as his son.
From around 1200 to 1438 the Incas were a small tribe that gradually grew.
Starting around the year 1438 the Incas started expanding when Inca Pachacutec came to the throne, at this point the Inca civilization became an empire.
Over 20,000 years ago the Bering Strait connected Siberia and Alaska, it took several thousand years to populate and create civilizations in the Americas.
Groups of people settled along the way creating communities.
The organization of the empire rivaled that of the Romans.
Their exquisite buildings were built without the use of modern tools and the wheel and they have withstood five centuries in an earthquake prone zone.
They were followed by Chavin, Paracas, Nazca, Moche, Tiawanaku, Wari and Chimu.
Between 11BC the Incas, by then a small tribe, were searching for farmland which they found in the fertile mountain valleys of Cusco.
The conquest of Peru officially started in 1532 when a group led by Francisco Pizarro arrived in the city of Cajamarca to meet Atahualpa.
The ancestors of the Incas were hunters who came from Asia crossing the Bering Strait.