Complex sentence: Twelve men in Colebrook, New Hampshire created the "New England Emigrating Company" in October 1836 and sent Dr. Horace White to find a suitable region of Wisconsin in which to settle.
Split into simpler sentences: Twelve men in Colebrook, New Hampshire created the "New England Emigrating Company" in October 1836. They sent a man named Dr. Horace White to find a suitable region of Wisconsin to settle.