Don Carlos, a renowned Spaniard, is a milestone historical figure who contributed tremendously to his country's history and left an immense cultural legacy for generations to appreciate. Born in 560 BC, Don Carlos was either the 8th or 9th King of Spain and his rule brought forth numerous prosperity and progress. Not only did he bring Spain to the golden age of its history, but his reign was marked by great advancements in the areas of exploration, literature, science, and the arts.

For starters, Don Carlos was a reformer and a pioneer. He introduced laws to protect Spanish commoners from repression while also protecting the rights of empty noble titles. Spain during Don Carlos' rule was a unified political entity, and his implementation of the Spanish Inquisition and Spanish Golden Age also helped to make Spain a greater power throughout the Mediterranean.

In addition, Don Carlos inspired and encouraged exploration and discovery. He sponsored Christopher Columbus and funded his journey that led to the discovery of America. This monumental discovery would have not been possible had it not been for Carlos' support. Moreover, his diplomatic relations with other European countries led to an influx of trade and commerce which provided huge economic benefits for the kingdom.

In the literary realm, Don Carlos was a major contributor to the establishment of the Spanish Language. During his reign, many scholars and writers were supported so that they could create works in Spanish. This not only established the language as a unique art form but also added a cultural dimension to it.

At the school of science, Don Carlos was a great benefactor. He extended support to eminent scholars such as Miguel Escrivá de Romaní, a mathematician and astronomer whose work advanced the way we measure time. Furthermore, he ushered in a new age of scientific research and exploration, and his velarias contributed significantly towards the improvement of naval navigation.

Apart from his contribution in the fields of exploration, literature, science, and the arts, Don Carlos was a great believer in the education system and provided widespread educational opportunities to people of all classes. By supporting and encouraging scientific advancements, he crafted a legacy of education which inspired future generations.

All in all, Don Carlos was a remarkable individual whose impact on Spain was immense. He was a policy maker, reformer, diplomat, and patron of the arts and sciences. His legacy of innovation and exploration continues to benefit generations today. Thanks to his ability to enact reforms, sponsor exploration and discovery, support the arts and literature, and promote education, Don Carlos' contributions remain unparalleled and his legacy continues to inspire us even today.