European colonizers decimated the indigenous population of South America and, indirectly, caused climate change
Before the arrival of the colonizers in South America, the continent was full of indigenous people numbering more than 60 million people, and more than a hundred years later their number dropped to only six million, reports Srna. The colonizers brought not only war, famine, and the downfall of ancient empires, but also diseases like smallpox and influenza that decimated the indigenous population because they did not have adequate immunity. In just one century, this continent has lost 92 percent of its population. The study shows that so much population deaths were caused by the "Little Ice Age" - the era of global cooling when the Thames in London froze, between the 16th and 19th centuries. Scientists from London are discovering that after a rapid decline in population, large areas of vegetation and farms have been abandoned. It is an area as large as today's France. Trees and other flora spread and grew uncontrollably, absorbing more carbon dioxide. Due to the disappearance of carbon dioxide from the atmosphere, global temperatures, on average, fell by 0.15 degrees Celsius, and in Europe even more. This study is, experts estimate, a counter-argument to all those who deny climate change and those who claim that climate changes in natural cycles, and that people have nothing to do with it.