Answer:
1. The Reconquista was completed.
Parts of Spain had been ruled by the Muslim Moors for a ver long time and the Christian kingdoms of Spain hated this until they mounted several centuries of campaigns to remove the Muslims from their kingdoms in Spain.
2. The Spanish Inquisition forced most non-Catholics out of Spain.
The Spanish Inquisition was then founded in the 15th century to supress whatever was viewed as heresy in the church by the unified Kingdom of Spain.
3. Spanish conquistadores traveled to the New World in search of riches and land.
The Spanish then turned their attention to the New World where conquistadores like Christopher Columbus went and brought back riches and tales of even greater riches.
4. The conquistadores converted the conquered colonies to Christianity.
After the conquistadores conquered the native people, they would then convert them to Catholicism.
