at the Battle of Lechfeld in 955 signaled a provisory end to most campaigns on foreign territories, at least towards the West.
Age of Árpádian kings
The year 972 marked the date when the ruling prince (Hungarian: fejedelem) Géza of the Árpád dynasty officially started to integrate Hungary into the Christian Western Europe. His first-born son, Saint Stephen I became the first King of Hungary after defeating his pagan uncle Koppány, who also claimed the throne. Under Stephen, Hungary was recognized as a Catholic Apostolic Kingdom. Applying to Pope Sylvester II, Stephen received the insignia of royalty (including probably a part of the Holy Crown of Hungary, currently kept in the Hungarian Parliament) from the papacy.
By 1006, Stephen had consolidated his power, and started sweeping reforms to convert Hungary into a Western feudal state. The country switched to using the Latin language, and until as late as 1844, Latin remained the official language of Hungary. Hungary became a powerful kingdom. Ladislaus I extended Hungary's frontier in Transylvania and invaded Croatia in 1091. The Croatian campaign culminated in the Battle of Gvozd Mountain in 1097 and a personal union of Croatia and Hungary in 1102, ruled by Coloman.
The most powerful and wealthiest king of the Árpád dynasty was Béla III, who disposed of the equivalent of 23 tonnes of pure silver a year. This exceeded the income of the French king (estimated at 17 tonnes) and was double the receipts of the English Crown.
Andrew II issued the Diploma Andreanum which secured the special privileges of the Transylvanian Saxons and is considered the first Autonomy law in the world. He led the Fifth Crusade to the Holy Land in 1217, setting up the largest royal army in the history of Crusades. His Golden Bull of 1222 was the first constitution in Continental Europe. The lesser nobles also began to present Andrew with grievances, a practice that evolved into the
