Complex sentence: In 1810 the route from Boston to Worcester was straightened and improved into an official turnpike (the present Route 9), and along its Westborough route, the Wesson Tavern Common, Forbush Tavern and Nathan Fisher's store prospered.
Split into simpler sentences: In 1810 the route from Boston to Worcester was straightened and improved into an official turnpike (the present Route 9). Along its Westborough route, the Wesson Tavern Common, Forbush Tavern and Nathan Fisher's store prospered.