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
Buenos Aires Province Buenos Aires Province Buenos Aires (, "Provincia de Buenos Aires"; English: "good airs") is the largest and most populous Argentinian province. It takes the name from the city of Buenos Aires, which used to be part of the province and the provincial capital until it was federalized in 1880. Since then, in spite of bearing the same name, the province does not include the national capital city proper, though it does include all other localities of the Greater Buenos Aires metropolitan area surrounding it. The current capital of the province is the city of La Plata, founded in 1882. The