After 1450, the economic system in Western Europe underwent significant changes, particularly with the decline of feudalism and the rise of early capitalism. While none of the answer choices perfectly encapsulate the complexity of these changes, the best fit among the given options would be:
A. The economic system was based on industrialization.
Although industrialization as we know it didn't fully develop until the 18th and 19th centuries, the period after 1450 saw the beginnings of market-oriented economies, trade expansion, and the growing influence of merchant capitalism, which laid the groundwork for industrialization. These changes included the rise of a more modern banking system, increased exploration and trade due to the Age of Discovery, and the gradual decline of the feudal system in favor of a more market-driven economy.