Actually Isabel and Ferdinand did not "Unite" Spain.
Ferdinand II was the King of Aragon. Isabela I was the Queen of Castile and Leon. They were married in 1469. Each ruled their own kingdom(s) and co-ruled their spouse' kingdom. Both were deceased by 1516.
Spain did not come into being (was "United") until their Grandson Carlos I of Spain, also known as Charles V of the Holy Roman Empire, inherited the 3 kingdoms in 1516. Isabela I and Ferdinand II never ruled "Spain".
Isabela I died in 1504 and was succeeded by her daughter, Juana la Loca (Juana the crazy, who was in turn succeeded by Philip I. Ferdinand ruled Aragon until his death in 1516.
Ferdinand and Isabella controlled the nobles and kept order by creating the Spanish Inquisition. Any person who was not Catholic was considered to be against Spain.
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Isabella I Queen of Castile and Leon helped unite Spain with her husband Ferdinand, King of Aragon. Together they defeated and expelled the Moors, and united Spain in 1492.
Isabella and Ferdinand's major goals were to create wealthy kingdoms and to spread Catholicism. They also attempted to unite their kingdoms under Catholicism but were unsuccessful.
Queen Isabella of Spain's husband was named Ferdinand VII.
A codex of edicts and laws allowed Ferdinand and Isabella to centralize their power in Spain. This occurred in 1480.
kind Ferdinand and queen Isabella
Spain
Queen Isabella and King Ferdinand financed or sponsored columbus' travels the the "New Woorld".
queen Isabella Christopher Columbus asked King Ferdinand & Queen Isabella of Spain for money to try out his idea of traveling west to reach the East. Queen Isabella refused Columbus at first. Later King Ferdinand and Queen Isabella gave Columbus three ships, a crew of about ninety men, and some money. The three ships were the Niña, Pinta, and Santa María.
At the time when Ferdinand and Isabella ruled Spain, the Spanish Inquisition was taking place, which was intended to rid Spain of Jews or anyone who was not Christian.
The Spanish Government under Ferdinand and Isabella/
the funding came from Queen Isabella and king Ferdinand of Spain
Columbus's voyages were funded by Queen Isabella and King Ferdinand of Spain.