Complex sentence: Although primarily rural, England had a number of old, economically important towns in 1066, particularly in the east where a large amount of trade came through towns such as London, York, Winchester, Lincoln, Norwich, Ipswich and Thetford.
Split into simpler sentences: Although primarily rural, England had a number of old, economically important towns in 1066. A large amount of trade came through the Eastern towns, including London, York, Winchester, Lincoln, Norwich, Ipswich and Thetford.