Methuen Treaty Brazilian economist Celso Furtado, in his work "Brazilian Economic Foundation". At the start of the War of Spanish Succession Portugal was allied with France. As part of this treaty the French had guaranteed the Portuguese naval protection. In 1702, the English navy sailed close to Lisbon on the way to and from Cadiz, proving to the Portuguese that the French could not keep their promise. They soon began negotiations with the Grand Alliance about switching sides. There were actually two Methuen Treaties. Both were negotiated for England in Lisbon by John Methuen ( 1650–1706), who served as a member of
Jay Treaty new "First Party System", with the Federalists favoring the British and the Jeffersonian republicans favoring France. The treaty was for ten years' duration. Efforts failed to agree on a replacement treaty in 1806 when Jefferson rejected the Monroe–Pinkney Treaty, as tensions escalated toward the War of 1812. The outbreak of war between France and Great Britain (and other countries) in 1793 ended the long peace that had enabled the new nation to flourish in terms of trade and finance. The United States now emerged as an important neutral country with a large shipping trade. From the British perspective, improving relations