Question: This Republic, established in 1581 and the focus of The Secret Treaty of Dover, contained how many provinces?
Sentence (from "Dutch Republic"): The Dutch Republic, also known as the Republic of the Seven United Netherlands ("Republiek der Zeven Verenigde Nederlanden "), Republic of the United Netherlands, Republic of the Seven United Provinces ("Republiek der Zeven Verenigde Provinciën "), the United Provinces ("Verenigde Provinciën "), Seven Provinces ("Zeven Provinciën "), Federated Dutch Provinces ("Foederatae Belgii Provinciae "), or the Dutch Federation ("Belgica Foederata ") was a republic in Europe existing from 1581, when part of the Netherlands separated from Spanish rule, until 1795.
Relevant evidence: Yes