This question makes no sense. Isabella and Ferdinand were both already King and Queen. Columbus didn't make them anything except money.
Ferdinand V and Isabella of Spain.
Isabella and Ferdinand were the queen and king of Spain. They financed Christopher Columbus' voyage to America after his own government would not.
Queen Isabella and king Ferdinand.
What was christopher Columbus's goal that convinced king Ferdinand and queen isabella to pay his journey
christopher Columbus
Queen Isabella and King Ferdinand what was Christopher Columbus's salary in 1492/
Christopher Columbus sailed for King Ferdinand II and for Queen Isabella of Spain.
Ferdinand and Isabella
Christopher Columbus!
Christopher Columbus asked Queen Elizabeth for ships to fight the spanish.
Christopher Columbus
Christopher Columbus sailed for King Ferdinand and Queen Isabella of Spain.