European economy had several changes after the age of discovery. In Spain, there was an inflation of the price, which declined its economy. In Netherlands, they established West and East Indies Company, which improved Netherlands' economy. In Portugal, the economy improved because of flow of gold into the Portugal.
Spanish explorer found gold mines in Zactecas and Guanajuanto and Potosi. As a result, huge amount of gold and silver poured in to Spain. At the same time, there was an increase in population, and there was a huge demand for food. Spanish colonies also demanded for food, so the demand for food increased