 the peace of westphalia was a series of peace treaties signed between may and october 1648 in osnabrÃ¼ck and mÃ¼nster. these treaties ended the thirty years' war (1618â1648) in the holy roman empire, and the eighty years' war (1568â1648) between spain and the dutch republic, with spain formally recognizing the independence of the dutch republic. the peace of westphalia treaties involved the holy roman emperor, ferdinand iii, of the house of habsburg; the kingdom of spain; the kingdom of france; the swedish empire; the dutch republic; the princes of the holy roman empire; and sovereigns of the free imperial cities. it can be denoted by two major events. * the signing of the peace of mÃ¼nster between the dutch republic and the kingdom of spain on 30 january 1648, officially ratified in mÃ¼nster on 15 may 1648. * the signing of two complementary treaties on 24 october 1648, namely: ** the treaty of mÃ¼nster (instrumentum pacis monasteriensis, ipm), concerning the holy roman emperor and france and their respective allies. ** the treaty of osnabrÃ¼ck (instrumentum pacis osnabrugensis, ipo), concerning the holy roman empire, the kingdom of france, sweden and their respective allies. the treaties did not restore peace throughout europe, but they did create a basis for national self-determination. the treaties resulted from the big diplomatic congress,{{cite web|url=http://www.muenster.de/en/peace_of_westphalia.php|title=information from city 
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