Complex sentence: In 1819, the U.S. Supreme Court granted corporations rights they had not previously recognized in "Trustees of Dartmouth College v. Woodward", by deeming corporate charters "inviolable" and not subject to arbitrary amendment or abolition by state governments.
Split into simpler sentences: In 1819, the U.S. Supreme Court granted corporations rights they had not previously recognized in "Trustees of Dartmouth College v. Woodward". Corporate charters were deemed "inviolable," and not subject to arbitrary amendment or abolition by state governments.