The correct answer is - I only.
The resemblance in both the landscape and the agricultural production between the Midwestern United States and Argentina is striking and very easily noticeable.
Most of the agricultural production in Argentina is located in the Pampas, which are naturally lowland grassland areas with highly fertile soil which is pretty much the same as the natural prairie landscape of the Midwestern United States.
In both regions there's large scale industrial agriculture, with the focus on only few crops or animals, like the corn, wheat, and kettle, with production orientated for both the domestic and the foreign markets.