Complex sentence: To facilitate this restoration, the terms of the treaty were reasonably lenient towards France: she was allowed to retain her boundaries of 1792, including some 3280 square miles of territory captured since 1790, notably Avignon and Venaissin.
Split into simpler sentences: To facilitate this restoration, the terms of the treaty were reasonably lenient towards France. She was allowed to retain her boundaries of 1792, including some 3280 square miles of territory captured since 1790, notably Avignon and Venaissin.