The Northern Land Bridge

Both the reading passage and the lecture are about early people's migration to the American continent. The author draws our attention to the Northern Land Bridge theory which claims that Clovis people, migrants from Eastern Asia, were the first ones to move to North America through a land bridge. The lecturer, however, points out some facts that significantly undermine the above-mentioned theory. First of all, we learn from the reading passage that there were some stone artifacts found across the continent made by eastern asian settles that prove the theory that Clovis were first. Nevertheless, the lecturer claims that several sites have been found that are older than 80 000 years while the Clovis are believed to have arrived to North America just 11 000 - 13 000 years ago. Moreover, those sites were found as far as Chilie. Undoubtedly, travelling there would take a significant amount of time. This also undermines the Clovis-first theory supported by the author. Secondly, the reading passage states that the first settlers were from Eastern Asia. However, from the lecture we learn that North America was, in fact, colonized by many different people. The lecturer goes on noting that the conducted DNA analysis shows that there were many settlers from Siberia, who arrived approximately 40 000 years ago.