Union of Utrecht Union of Utrecht The Union of Utrecht () was a treaty signed on 23 January 1579 in Utrecht, the Netherlands, unifying the northern provinces of the Netherlands, until then under the control of Habsburg Spain. The Union of Utrecht is regarded as the foundation of the Republic of the Seven United Provinces, which was not recognized by the Spanish Empire until the Twelve Years' Truce in 1609. The treaty was signed on 23 January by Holland, Zeeland, Utrecht (but not all of Utrecht) and the province (but not the city) of Groningen. The treaty was a reaction of the Protestant
Province of Ferrara Mantua in Lombardy to the northwest. To the west lies the Province of Modena and the Province of Bologna, and the Province of Ravenna lies to the south. The provincial capital is the city of Ferrara, which is situated on a branch of the Po River about northeast of Bologna. Province of Ferrara The province of Ferrara () is a province in the Emilia-Romagna region of Italy. Its provincial capital is the city Ferrara. As of 2016, it has a population of 354,238 inhabitants over an area of . It contains 23 "comuni", listed at list of communes of the