How did the spanish prove to be excellent allies in the war

Spain provided supplies such as food, water and weapons. Their alliance with france allowed them to double ally. Getting supplies from france and giving them t America.          

   Source: Wikipedia.org 

um is there supposed to be choices?

the safahids used force when persuasion to convert from being a sunni muslim to embrace shi'ism was not effective. they also persecute shi'ites who have different views from their imposed teachings.