On 23 June 1661, a marriage treaty was signed, Catherine's dowry securing to England Tangier (in North Africa) and the Seven islands of Bombay (the latter having a major influence on the development of the British Empire in India), together with trading privileges in Brazil and the East Indies, religious and commercial freedom in Portugal and two million Portuguese crowns (about £300,000); while Portugal obtained military and naval support against Spain and liberty of worship for Catherine.