Complex sentence: However in the 18th century, the Methuen Treaty of 1703 gave high duties for French wine, lead to the English being a main consumer of sweet fortified wines like sherry, port wine, and Madeira wine from Spain and Portugal.
Split into simpler sentences: However in the 18th century, the Methuen Treaty of 1703 imposed high duties on French wine. This lead to the English becoming a main consumer of sweet fortified wines like sherry, port wine, and Madeira wine from Spain and Portugal.