Complex sentence: This change was made so that Society Bank and KeyBank customers could bank at any KeyCorp facility across the entire United States and all banks fell under one single charter eliminating the costs of holding separate bank charters in each state.
Split into simpler sentences: This change was made so that Society Bank and KeyBank customers could bank at any KeyCorp facility nationwide. It also surrendered its separate charters in favor of a single national charter, eliminating the costs of holding separate bank charters in each state.