The Isabelline style, also called the Isabelline Gothic (Gótico Isabelino), or Castilian late Gothic, was the dominant architectural style of the Crown of Castile during the reign of the Catholic Monarchs, Queen Isabella I of Castile and King Ferdinand II of Aragon in the late-15th century to early-16th century. The Frenchman Émile Bertaux named the style after Queen Isabella. It represents the transition between late Gothic and early Renaissance architecture, with original features and decorative influences of the Castilian tradition, the Flemish, the Mudéjar, and to a much lesser extent, Italian architecture. The consideration or not of the Isabelline as a Gothic or Renaissance style, or as an Eclectic style, or as a phase within a greater Plateresque generic, is a question debated by historians of art and unresolved. The Isabelline style introduced several structural elements of the Castilian tradition and the typical flamboyant forms of Flanders, as well as some ornaments of Mudéjar influence. Many of the buildings that were built in this style were commissioned by the Catholic Monarchs or were in some way sponsored by them. A similar style called Manueline developed concurrently in Portugal. The most obvious characteristic of the Isabelline is the predominance of heraldic and epigraphic motifs, especially the symbols of the yoke and arrows and the pomegranate, which refer to the Catholic Monarchs. Also characteristic of this period is ornamentation using beaded motifs of orbs worked in plaster or carved in stone. After the Catholic Monarchs had completed the Reconquista in 1492 and started the colonization of the Americas, imperial Spain began to develop a consciousness of its growing power and wealth, and in its exuberance launched a period of construction of grand monuments to symbolize them. Many of these monuments were built at the command of the Queen; thus Isabelline Gothic manifested the desire of the Spanish ruling classes to display their own power and wealth.