High Middle Ages
The High Middle Ages, or High Medieval Period, was the period of European history between and ; it was preceded by the Early Middle Ages and followed by the Late Middle Ages, which ended according to historiographical convention.
Key historical trends of the High Middle Ages include the rapidly increasing population of Europe, which brought about great social and political change from the preceding era, and the Renaissance of the 12th century, including the first developments of the rural exodus and urbanization. By 1350, the robust population increase had greatly benefited the European economy, which had reached levels that would not be seen again in some areas until the 19th century. That trend faltered in the early 14th century, as the result of numerous events which together comprised the crisis of the late Middle Ages—most notable among them being the Black Death, in addition to various regional wars and economic stagnation.
From, Europe saw the last of the barbarian invasions and became more socially and politically organized. The Carolingian Renaissance stimulated scientific and philosophical activity in Northern Europe. The first universities started operating in Bologna, Oxford, Paris, Salamanca, Cambridge and Modena. The Vikings settled in the British Isles, France and elsewhere, and Norse Christian kingdoms started developing in their Scandinavian homelands. The Magyars ceased their expansion in the 10th century, and by 1000, a Christian Kingdom of Hungary had become a recognized state in Central Europe that was forming alliances with regional powers. With the brief exception of the Mongol invasions in the 13th century, major nomadic incursions ceased. The powerful Byzantine Empire of the Macedonian and Komnenos dynasties gradually gave way to the resurrected Serbia and Bulgaria and to a successor crusader state, who continually fought each other until the end of the Latin Empire. The Byzantine Empire was reestablished in 1261 with the recapture of Constantinople from the Latins, though it was no longer a major power and would continue to falter through the 14th century, with remnants lasting until the mid 15th century.
In the 11th century, populations north of the Alps began a more intensive settlement, targeting "new" lands, some areas of which had reverted to wilderness after the end of the Western Roman Empire. In what historian Charles Higounet called the "great clearances", Europeans cleared and cultivated some of the vast forests and marshes that lay across much of the continent. At the same time, settlers moved beyond the traditional boundaries of the Frankish Empire to new frontiers beyond the Elbe River, which tripled the size of Germany in the process. The Catholic Church, which reached the peak of its political power around then, called armies from across Europe to a series of Crusades against the Seljuk Turks. The crusaders occupied the Holy Land and founded the Crusader States in the Levant. Other wars led to the Northern Crusades. The Christian kingdoms took much of the Iberian Peninsula from Muslim control, and the Normans conquered southern Italy, all part of the major population increases and the resettlement patterns of the era.
The High Middle Ages produced many different forms of intellectual, spiritual and artistic works. The age also saw the rise of ethnocentrism, which evolved later into modern national identities in most of Europe, the ascent of the great Italian city-states and the rise and fall of the Islamic civilization of Al-Andalus. The rediscovery of the works of Aristotle, at first indirectly through medieval Jewish and Islamic philosophy, led Maimonides, Ibn Sina, Ibn Rushd, Thomas Aquinas and other thinkers of the period to expand Scholasticism, a combination of Judeo-Islamic and Catholic ideologies with the ancient philosophy. For much of this period, Constantinople remained Europe's most populous city, and Byzantine art reached a peak in the 12th century. In architecture, many of the most notable Gothic cathedrals were built or completed around this period.
Historical events and politics
Great Britain and Ireland
In England, the Norman Conquest of 1066 resulted in a kingdom ruled by a Francophone nobility. The Normans invaded Ireland in 1169 and soon established themselves in most of the country, although their stronghold was the southeast. Likewise, Scotland and Wales were subdued into vassal states at about the same time, though Scotland later asserted its independence and Wales remained largely under the rule of independent native princes until the death of Llywelyn ap Gruffydd in 1282. The Exchequer was founded in the 12th century under King Henry I, and the first parliaments were convened. In 1215, after the loss of Normandy, King John signed the Magna Carta into law, limiting the power of English monarchs.Iberia
A key geo-strategic development in the Iberian Peninsula was the Christian conquest of Toledo in 1085. Dominated by war, the societal structures and relations in the northern Christian kingdoms were subordinated to the demands of omnipresent military conflict. The territorial expansion of the northern Christian kingdoms to the south brought the creation of border societies, where military demands on knights and foot soldiers and the promotion of settlement were prioritized over potential seigneurial income; military orders also played an important role in the borderlands in the southern meseta. Agricultural models in areas with Mediterranean climate were generally based on biennial crop rotation. Despite population growth, agricultural output remained relatively rigid throughout the period; between the 10th and 13th centuries, migration southwards to exposed areas was incentivized by the possibility of enjoying privileges and acquiring properties. Conversely, the intensive agriculture-prevalent model in Muslim-ruled lands did not require territorial expansion. While Muslim lands enjoyed a certain demographic and financial edge, Almoravids and Almohads from northern Africa featured volatile state structures; barring attempts to take Toledo, they did not stand out for carrying out an expansionist policy.Italy
In Italy, with the Norman conquest, the first great and powerful state was formed, the Kingdom of Sicily with hereditary monarchy. Subsequently joined to the Holy Roman Empire, it had its moment of maximum splendor with the emperor Frederick II.In the rest of Italy, independent city states grew affluent on Eastern Mediterranean maritime trade. These were in particular the thalassocracies of Pisa, Amalfi, Genoa and Venice, which played a key role in European trade from then on, making these cities become major financial centers.