History of Strasbourg remained neutral during the Thirty Years' War (1618-1648), and retained its status as a Free Imperial City. However, the city was later annexed by Louis XIV of France to extend the borders of his kingdom. Louis' advisors believed that, as long as Strasbourg remained independent, it would endanger the King's newly annexed territories in Alsace, and, that to defend these large rural lands effectively, a garrison had to be placed in towns such as Strasbourg. Indeed, the bridge over the Rhine at Strasbourg had been used repeatedly by Imperial (Holy Roman Empire) forces, and three times during the Franco-Dutch War
Institutions of the European Union for the EU. Together with NATO it has attracted more journalists and ambassadors than Washington, D.C. However the three-city agreement has been criticised, notably concerning the Parliament due to the large number of people that move between the cities. The European Green Party estimated that the arrangement costs 200 million euro and 20,268 tonnes of carbon dioxide. Brussels is preferred by some due to the presence of other institutions and other groups whereas Strasbourg is supported due to its historical importance to European unity. Institutions of the European Union The institutions of the European Union are the seven principal decision