Final answer:
The chronological order of events in the development of Spain begins with the Muslim armies invading the Iberian Peninsula in the eighth century. This is followed by the marriage of Isabella I and Ferdinand II in 1469, the completion of the Reconquista in 1492, and the establishment of the Kingdom of Spain in the same year.
Step-by-step explanation:
Chronological Development of Spain
The development of modern Spain can be understood through a series of pivotal historical events. First, during the eighth century, Muslim armies invaded the Iberian Peninsula, beginning a period of Islamic rule that would last for several centuries. This is widely accepted as starting in the year 711. Following this period, a significant matrimonial event occurred in 1469 when Isabella I of Castile married Ferdinand II of Aragon.
This union was a strategic move that unified Catholic Spain and set the stage for a consolidated Spanish monarchy. In 1492, a decisive moment in Spanish history took place with the Reconquista occurring. King Ferdinand II and Queen Isabella I completed the centuries-long Christian campaign to reclaim the Iberian Peninsula from the Muslims. This year also marks the period when the Kingdom of Spain was effectively established, with the expulsion of the Moors and the unification of the Spanish territories. Based on the historical events provided, the steps in the development of Spain should be placed in the following order: iii, II, I, iv.