The two main regions that fought to control Spain were Castile and Aragon. Their rivalry culminated in the unification of the Kingdom of Spain under the Catholic Monarchs, Ferdinand II of Aragon and Isabella I of Castile, in the late 15th century. This unification was marked by the completion of the Reconquista in 1492 and the establishment of a centralized Spanish monarchy. The struggles between these regions were crucial in shaping the political landscape of Spain.
During the sixteenth and seventeenth century France and Spain fought for control of Italy.
muslim and catholics
Spain controlled South American and Central America.
Catholics and Muslims
There were no crusaders fought in Europe there were all fought in the middle east and Turkey.... There was a time when the Muslims did control Spain but it's not a Crusade.... Crusade even means "Holy War".
Spain,Mexico
The USA and Spain.
Islam and Christianity
when two men from spain and florence fought for victory and yea
France, Spain and The Netherlands.
Spain and England .
The main regions under China's control which harbor strong separatist movements are Tibet and Xinjiang