Approximately 65 million years ago, a large percentage of vegetables and animals suddenly became extinct. It was in the late Cretaceous period and there are various theories about it. Some scientists attribute this event to a gradual process that finally led to selective extinction. Others assert that a catastrophe, such as an asteroid hitting the Earth, caused these species mass extinction.
The rise of the estancias has changed the empty limitless space into a rural production environment that enabled the country to be positioned among the first suppliers of raw material in the world.
Towards the south, the estancias have given the scenery a new shape. Getting through the harsh winter, the intense snowfalls and the incessant wind, they have become real settlements scattered in the vastness of the fields.