How were monuments built on Easter Island?
Among the researchers, the most widespread theory is that Moai on the island of Easter were built by settlers from the islands of Polynesia in the 11th century. How they did it - is still unknown. The experiments of Heyerdahl's Tour were crowned with success only partially. His method of transportation was not suitable for multi-meter colossi with a mass of 50 tons or more. The Norwegian scientist also could not explain how hats with a weight of up to two tons were worn on the Mao.
Where was the "cradle" of Indo-Europeans?
This issue is still open. It used to be that the "cradle" of Indo-Europeans was in India, but linguistic analysis refutes this. As a rule, in the region of origin of a language family there are many different languages and dialects of the same family, and in India there is only one Indo-Aryan branch of languages. In Central and Eastern Europe, on the contrary, there are hundreds of varieties of Indo-European languages. The most reliable, although not proven, version is that the ancestral home of the Indo-Europeans were the Volga and Black Sea lands, on which archeologists recorded a pit culture.