Complex sentence: The Flat Hat Club (as it was known outside its membership) or F.H.C. Society was the first of the collegiate secret societies or fraternities founded in the present United States at The College of William and Mary in Williamsburg, Virginia on November 11,1750.
Split into simpler sentences: The Flat Hat Club (as it was known outside its membership) or F.H.C. Society was the first of the collegiate secret societies or fraternities founded in the present United States. The F.H.C. Society was established at The College of William and Mary in Williamsburg, Virginia on November 11,1750.