Why did the marriage of ferdinand and isabella unify spain?

Which choice describes some of the difficulties john adams faced as presiden

Match the following events to the effects they produced. fall of constantinople italian wars hundred years’ war paved the way for the entry of renaissance ideas of peace and renewal arrowright caused an influx of classical greek and roman knowledge and texts into europe arrowright led to the introduction of renaissance thought and ideas to france arrowright

In keeping their culture unchanged what do canadians fear the most?