both were battles between Muslims and christian kingdoms in Spain
First you have to get the question right... It should read the Muslim conquest of Spain.
what is the relationship with the native Americans Spain
muslim and catholics
Catholics and Muslims
Spain was an Arab country.
the crusades were fought in the middle east, some in spain, germany and byzantine.
Spain is 94% Roman Catholic. All the other religions only total 6%.    
   
Spain.
70% of Spain is Roman Catholic, 2% other religions,25% no religion. Roman Catholocism is a denomination of Christianity
spain is a factor
The main religion of Spain is Catholicism.Well, the main religion in Spain is Catholicism. 94% of the population is Catholic, but they do have other religions there too.
both were battles between Muslims and christian kingdoms in Spain
Roman Catholicism makes up a large percentage of the religions practiced in Spain. However, many do not practice religious worship or attend church.
About 75% of Spain is Roman Catholic. About 20% say they are atheists or non-believers.
The crusades put a strain on getting luxury and royalty items from Spain and India. However, a good affect of the crusades was that spices and clothing that were brought back made for a better trading link.