Original: From these unified Netherlands, seven northern provinces would form the Republic of the Seven United Provinces in the 17th century, namely Holland, Zeeland, Gelderland, Utrecht, Friesland, Overijssel and Groningen.
Simplified: From these unified Netherlands, seven northern provinces formed the Republic of the Seven United Provinces in the 16th century. These were Holland, Zeeland, Gelderland, Utrecht, Friesland, Overijssel and Groningen.