The document summarizes the history of the Spanish Empire from its origins to its decline. It began with the reconquest of Spain from the Moors in 1492 and the voyages of Columbus that sparked Spain's colonial expansion. In the 16th century, Spain established a vast global empire through conquering the Aztec and Inca empires in the Americas and establishing colonies worldwide. However, by the 17th century Spain entered a gradual decline as its costly European wars drained its resources and its Habsburg rulers grew increasingly ineffective. The Spanish Empire reached its peak in the 17th century but lost most of its European holdings by the early 18th century.