George McCall Theal,
Willem Adriaan Van Der Stel, and Other Historical Sketches
“ On the other hand, on the 23rd of January 1579 the foundation of the Netherlands Republic was laid by an agreement termed the Union of Utrecht, which was proclaimed on the 29th of the same month. The union was a loose one, for it left to each province and each city its own constitution unaltered, and only provided for a general assembly of deputies from the estates of the different provinces, in which each should have the same voting power, no matter how many deputies it should send. The object was defence against a common foe. ”
