Dutch people
By the middle of the 16th century an overarching, 'national' (rather than 'ethnic') identity seemed in development in the Habsburg Netherlands, when inhabitants began to refer to it as their 'fatherland' and were beginning to be seen as a collective entity abroad; however, the persistence of language barriers, traditional strife between towns, and provincial particularism continued to form an impediment to more thorough unification. Following excessive taxation together with attempts at diminishing the traditional autonomy of the cities and estates in the Low Countries, followed by the religious oppression after being transferred to Habsburg Spain, the Dutch revolted, in what would become the Eighty Years' War. For the first time in their history, the Dutch established their independence from foreign rule. However, during the war it became apparent that the goal of liberating all the provinces and cities that had signed the Union of Utrecht, which roughly corresponded to the Dutch-speaking part of the Spanish Netherlands, was unreachable. The Northern provinces were free, but during the 1580s the South was recaptured by Spain, and, despite various attempts, the armies of the Republic were unable to expel them. In 1648, the Peace of Münster, ending the Eighty Years' War, acknowledged the independence of the Dutch Republic, but maintained Spanish control of the Southern Netherlands. Apart from a brief reunification from 1815 until 1830, within the United Kingdom of the Netherlands (which included the Francophones/Walloons) the Dutch have been separated from the Flemings to this day.
Pennsylvania Dutch Country
The term "Dutch" is from an archaic sense of the English word "Dutch", which once referred to any people speaking a non-peripheral continental West Germanic language on the European mainland. The German-speaking settlers came from a variety of countries and religious backgrounds, but most became assimilated to Anglo-American language and culture beginning in the later 19th century with English language evangelism efforts and the outlawing of German language schooling. The assimilation process continued soon after the turn of the 20th century with World War I, consolidated schools, and the advent of mandatory public education until the age of 16, with added pressures from increased mobility, the influence of English-language media, communications, and urbanization. Also, many German-Americans hid their ethnicity with the spread of Anti-German sentiment and negative propaganda against the German people.