Complex sentence: As a primary chief of the Cherokee, Black Fox relinquished nearly seven thousand square miles of land in Tennessee and Alabama under the treaty of January 7,1806, in which he was given a life annuity of $100.
Split into simpler sentences: As a primary chief of the Cherokee, Black Fox relinquished nearly seven thousand square miles of land in Tennessee and Alabama under the treaty of January 7,1806. In which he was given a life annuity of $100.