The Spanish monarchs' investment in exploration of the Americas yielded great wealth and power for Spain. Spain was able to establish colonies in the Americas, which provided them with valuable resources such as gold, silver, and other precious metals. Spain was also able to establish trade routes with the Americas, which further increased their wealth. Additionally, Spain was able to spread their culture and religion throughout the Americas. The Spanish language, customs, and traditions are still evident in many parts of the Americas today. Overall, the Spanish monarchs' investment in exploration of the Americas had a significant impact on Spain's economy, culture, and power.