Complex sentence: The fort named Fort Anne (in honor of Princess Anne, eldest daughter of King George II) was constructed in 1757 at the site where the 1777 Battle of Fort Anne occurred during the Saratoga Campaign.
Split into simpler sentences: The fort named Fort Anne (in honor of Princess Anne, eldest daughter of King George II) was constructed in 1757. The site of the 1777 Battle of Fort Anne during the Saratoga Campaign.