Complex sentence: Occom preached his way across Britain from February 16,1766, to July 22,1767, delivering between three and four hundred sermons, drawing large crowds wherever he went and raising over ₤12,000 (pounds) for Wheelock's project.
Split into simpler sentences: Occom preached his way across the country from February 16,1766, to July 22,1767. By the end of his tour, he had raised over ₤12,000 (pounds) for Wheelock's project.