Answer:
The Spanish inquisition played a vital role in giving power to the monarch.
Step-by-step explanation:
The church remained a vital source of income for the Spanish crown. Fercia reales given to the Crown of Castile and it constituted the tithes collected by the church in this region. One of the great powers enjoyed by the Spanish rulers related to the Inquisition. It became a vital instrument for the expansion of the state power given by Pope Sixtus IV in 1478 to the Spanish monarch. Orthodox Christianity was the only real basis for the strong kingdom according to the Spanish monarchs.