Complex sentence: London Bridge is a bridge in Lake Havasu City, Arizona, United States, that is the relocated 1831 London Bridge that spanned the River Thames in London, England until it was dismantled in 1967.
Split into simpler sentences: London Bridge is a bridge in Lake Havasu City, Arizona, United States. It is a relocated 1831 bridge that formerly spanned the River Thames in London, England, until it was dismantled in 1967.