Iberian Union in the context of "Habsburg monarchy"

The Spanish Empire, sometimes referred to as the Hispanic Monarchy or the Catholic Monarchy, was a colonial empire that existed between 1492 and 1976. In conjunction with the Portuguese Empire, it ushered in the European Age of Discovery. It achieved a global scale, controlling vast portions of the Americas, Africa, various islands in Asia and Oceania, as well as territory in other parts of Europe. It was one of the most powerful empires of the early modern period, becoming known as "the empire on which the sun never sets". At its greatest extent in the late 1700s and early 1800s, the Spanish Empire covered 13.7 million square kilometres (5.3 million square miles), making it one of the largest empires in history.

Beginning with the 1492 arrival of Christopher Columbus and continuing for over three centuries, the Spanish Empire would expand across the Caribbean Islands, half of South America, most of Central America and much of North America. In the beginning, Portugal was the only serious threat to Spanish hegemony in the New World. To end the threat of Portuguese expansion, Spain conquered Portugal and the Azores Islands from 1580 to 1582 during the War of the Portuguese Succession, resulting in the establishment of the Iberian Union, a forced union between the two crowns that lasted until 1640 when Portugal regained its independence from Spain. In 1700, Philip V became king of Spain after the death of Charles II, the last Habsburg monarch of Spain, who died without an heir.

The Viceroyalty of Peru (Spanish: Virreinato del Perú), officially known as the Kingdom of Peru (Spanish: Reino del Perú), was a Spanish imperial provincial administrative district, created in 1542, that originally contained modern-day Peru and most of the Spanish Empire in South America, governed from the capital of Lima. Along with the Viceroyalty of New Spain, Peru was one of two Spanish viceroyalties in the Americas from the sixteenth to the eighteenth centuries.

The Spanish did not resist the Portuguese expansion of Brazil across the meridian established by the Treaty of Tordesillas. The treaty was rendered meaningless between 1580 and 1640 while Spain controlled Portugal. The creation during the 18th century of the Viceroyalties of New Granada and Río de la Plata (at the expense of Peru's territory) reduced the importance of Lima and shifted the lucrative Andean trade to Buenos Aires, while the fall of the mining and textile production accelerated the progressive decay of the Viceroyalty of Peru.

Habsburg Spain refers to Spain and the Hispanic Monarchy, also known as the Catholic Monarchy, in the period from 1516 to 1700 when it was ruled by kings from the House of Habsburg. In this period the Spanish Empire was at the zenith of its influence and power. During this period, Spain held many territories, including Pan-American continental holdings and the West Indies; European territories like the Low Countries, Italian territories, Portugal and parts of France; and the Philippines and other possessions in Southeast Asia. The period of Spanish history has also been referred to as the "Age of Expansion".

The Habsburg name was not always used by the family members, who often emphasized their more prestigious princely titles. The dynasty was long known as the "House of Austria". In some circumstances, the family members were identified by their birthplace. Thus, Charles V was known in his youth as Charles of Ghent. As king of Spain, he was known as Charles I of Spain and as emperor, Charles V (in French, Charles Quint). In Spain, the dynasty was known as the Casa de Austria, including illegitimate sons such as John of Austria and John Joseph of Austria. The arms displayed in their simplest form were those of Austria, which the Habsburgs had made their own, at times impaled with the arms of the Duchy of Burgundy (ancient), as seen on the arms of John of Austria. Calling this era "Habsburg", is, to some extent, a convenience for historians.

Philip II (21 May 1527 – 13 September 1598), sometimes known in Spain as Philip the Prudent (Spanish: Felipe el Prudente), was King of Spain from 1556, King of Portugal from 1580, and King of Naples and Sicily from 1554 until his death in 1598. He was also jure uxoris King of England and Ireland from his marriage to Queen Mary I in 1554 until her death in 1558. Further, he was Duke of Milan from 1540. From 1555, he was Lord of the Seventeen Provinces of the Netherlands.

The son of Emperor Charles V and Isabella of Portugal, Philip inherited his father's Spanish Empire in 1556, and succeeded to the Portuguese throne in 1580 following a dynastic crisis, forming the Iberian Union. The Spanish conquests of the Inca Empire and of the Philippines, named in his honour by Ruy López de Villalobos, were completed during his reign. He finished building the royal palace El Escorial in 1584. Under Philip II, Spain reached the height of its influence and power, advancing into the Spanish Golden Age, and ruled territories in every continent then known to Europeans. Deeply devout, Philip saw himself as the defender of Catholic Europe against the Ottoman Empire and the Protestant Reformation, and invested Spain's position as the leading European power in multiple simultaneous warring efforts.

The Restoration War (Portuguese: Guerra da Restauração) between Portugal and Spain began with the Portuguese revolution of 1640 and ended with the Treaty of Lisbon in 1668, bringing a formal end to the Iberian Union.The period from 1640 to 1668 was marked by periodic skirmishes between Portugal and Spain, as well as short episodes of more serious warfare, much of it occasioned by Spanish and Portuguese entanglements with non-Iberian powers. Spain was involved in the Thirty Years' War until 1648 and the Franco-Spanish War until 1659, while Portugal was involved in the Dutch–Portuguese War until 1663.

In the 17th century and afterwards, this period of sporadic conflict was simply known, in Portugal and elsewhere, as the Acclamation War. The war established the House of Braganza as Portugal's new ruling dynasty, replacing the House of Habsburg, which had been united with the Portuguese crown since the 1580 succession crisis.